Platform review
Stacker AI builds impressive internal tools from a prompt in minutes, but $199/mo entry and hard vendor lock-in make it hard to recommend over Glide for small teams or Retool for technical ones.
- Pricing from
- $199/mo (Plus — unverified; confirm at stacker.ai)
- Free tier
- No — 30-day trial only
- Founded
- 2018
- Best for
- Internal client/partner portals over Airtable or Salesforce with granular permissions
Reviewed July 2026
The verdict
Stacker AI builds impressive internal tools from a prompt in minutes, but $199/mo entry and hard vendor lock-in make it hard to recommend over Glide for small teams or Retool for technical ones.
Our recommendation
Stacker's core value proposition is well-defined: unlimited external users, granular role-based permissions, and AI-generated setup for portals built over Airtable, Google Sheets, or Salesforce. Teams that fit this exact pattern — an established data source, external stakeholders who need gated access, an ops budget north of $200/mo — will find Stacker genuinely useful. Everyone outside that pattern is paying too much for too little flexibility.
Choose it if
You're a mid-size business building internal tools or client portals over Airtable, Sheets, or Salesforce, need granular permissions and unlimited external users, and have budget for $199-349/mo.
Avoid it if
You're an individual founder, early-stage startup, or any team that needs custom-branded UI, code ownership, native mobile, or a real backend — competitors serve those needs better at lower or equivalent cost.
How we review: This review is based on hands-on evaluation by engineers who have built internal tools and client portals across the webapp-builder category, supplemented by verified community research (getapp.com, capterra.com, hackceleration.com, uibakery.io) and Stacker's own published documentation. Pricing figures are partially unverified (see caveats inline) — always confirm current pricing at stacker.ai. No affiliate relationships or sponsored placements exist with Stacker or any competitor mentioned.
Scored, dimension by dimension
Every score is earned — each note explains exactly why.
Ease of use
7.5/10The Stacker AI generator builds a working internal tool from a plain-language description in 3-5 minutes — verified in a hands-on review (hackceleration.com, 2026). For the target persona (operations or business users with an existing Airtable base), the learning curve is genuinely low. The caveat is the permissions configuration: designing a role/visibility matrix for 3-5 different stakeholder types with different data access requirements is a half-day to full-day exercise even with AI assistance, and the opinionated grid layout cannot be escaped through prompting.
Pricing & value
3.5/10The real-use entry price of $199/mo (Plus — hackceleration.com, 2026, unverified) is the highest floor of any platform in this cohort and eliminates hobbyists and early startups entirely. Multiple reviews describe it plainly: "cost of their tiers and features is very high… a lot of what should be basic requires the highest plan" (getapp.com; capterra.com, 2025-26). When you add the connected data source cost (Airtable Team runs ~$100/mo for 5 editors), the real TCO for a starter Plus deployment is approximately $300/mo before any overages or add-ons.
Scalability
5.5/10Plus tier caps at 100K records, 3 apps, and 10 internal users; Pro claims unlimited across these dimensions (hackceleration.com, 2026 — unverified). The harder ceiling is architectural: Stacker has no native relational backend and no API builder, so every scaling decision is constrained by the connected data source. Airtable base record limits (50K on Team, 125K on Business), Sheets row limits, and Salesforce API rate limits all stack on top of Stacker's plan limits, creating a compounded ceiling that teams with growing data volumes hit faster than they expect.
Performance
6.0/10Login-gated internal tool performance is acceptable for the typical portal use case — read/write forms, filtered record lists, and role-gated dashboards load without notable latency. There is no SSR requirement for portals (all users are authenticated), and no native mobile app is available. Anecdotal complaints about weak version control and complicated rollback options (uibakery.io, 2025 — dated) suggest the operational performance story for deployed apps is less polished than the build-time experience.
Ecosystem & integrations
6.5/10Stacker connects to Airtable, Google Sheets, Salesforce, and a claimed 6,000+ additional tools via its automation layer (hackceleration.com, 2026). The integration story for the target use case — an ops team with data already in Airtable or Sheets — is strong enough to cover typical internal-tool scenarios. The structural limitation is that Stacker is a pure front-end layer: there is no native relational backend, no SQL access, and no API builder, so teams needing to compute, transform, or aggregate data at the platform level are blocked.
Support & community
6.0/10Stacker School and the Stacker Forum provide structured onboarding for new users; documentation is active. The community is noticeably smaller than Bubble, Airtable, or Glide — which matters for edge-case troubleshooting where community answers substitute for support tickets. HIPAA compliance is not included as standard (blaze.tech, 2025), which disqualifies Stacker from regulated industries (healthcare, finance) without additional validation and contractual arrangements with Stacker directly. Real-time chat collaboration within Stacker is absent.
Vendor lock-in
2.5/10There is no code export from Stacker — leaving means exporting data from the connected source (Airtable/Sheets) and rebuilding the entire UI and permissions layer elsewhere from scratch (hackceleration.com, 2026). Critically, the data itself is not locked inside Stacker (it lives in the connected source), so the sunk cost is only the Stacker configuration and UX — but on a complex multi-role portal that configuration can represent weeks of work. LOW score = HIGH lock-in. For multi-year workflow commitments, this lock-in profile combines with product-direction risk to create a real exposure.
AI features
7.0/10Stacker AI (prompt-to-app, GA 2026) is the platform's headline repositioning and its most differentiating feature versus comparable portal builders. A hands-on review (hackceleration.com, 2026) confirms working internal tools generated in 3-5 minutes from conversational descriptions, with automatic connection to the existing Airtable or Sheets data source. The AI generates within Stacker's design and layout constraints — you cannot prompt your way to a custom-branded interface — but for the standard internal portal use case, the output is production-ready faster than any comparable tool in this price tier.
Pros & cons
What we like
- AI generator (Stacker AI, GA 2026) builds a working internal tool from a conversational prompt in 3-5 minutes — verified in hands-on testing (hackceleration.com, 2026), faster than any template-based approach in the internal-tools category.
- Unlimited external users on Plus and Pro tiers — clients, partners, and contractors can access the portal without per-seat cost penalties, a key structural advantage over Glide's $5/work-email-user Business model.
- Granular role-based permissions with row-level and field-level data visibility controls — Stacker was purpose-built for multi-stakeholder portals where different external users see different subsets of the same Airtable base.
- 6,000+ connectors via the automation layer; native first-class support for Airtable, Google Sheets, and Salesforce — the most common data sources for the ops/business target persona.
- Pro tier offers unlimited apps, records, users, tables, and roles (hackceleration.com, 2026 — unverified), eliminating plan-limit anxiety for teams that reach the Plus caps.
- Stacker School and Stacker Forum provide structured onboarding resources that reduce the time-to-first-working-portal significantly versus self-directed learning.
- Series A backing from Andreessen Horowitz (crunchbase.com) provides financial credibility for a niche player in a competitive market, though runway and public financials are not disclosed.
What we don't
- $199/mo real-use entry (Plus — unverified, confirm at stacker.ai) with no hobbyist or individual tier and only a 30-day trial as free access — the highest cost floor in the webapp-builder cohort reviewed here; a team of 2 founders pays more for Stacker than for Glide Maker ($49) + a full year of Airtable Team ($240) combined.
- No native relational backend, no SQL access, no API builder — Stacker is a pure front-end/portal layer, and every data operation, computation, and aggregation must live in the connected source (Airtable, Sheets, Salesforce); the connected source's limits compound with Stacker's own plan limits.
- No code export — migrating out means exporting data from the connected source and rebuilding the entire UI and permissions configuration from scratch elsewhere; weeks of permissions design work is not portable (hackceleration.com, 2026).
- Opinionated grid layout with minimal design control — custom branding (logo placement, custom colors, custom CSS) has historically required the Business tier at approximately $1,000/mo (adalo.com, 2025 — dated; verify current pricing at stacker.ai); pixel-perfect branded portals are not achievable at Plus/Pro.
- No HIPAA compliance as standard (blaze.tech, 2025) — regulated-industry teams (healthcare, finance, legal) cannot use Stacker without direct contractual validation from Stacker, which may not be available at Plus/Pro pricing levels.
- Product-direction risk: Stacker is a niche player competing against Softr, Noloco, Glide, and Airtable Interfaces — platforms with larger communities and stronger brand recognition. Unlike Bubble ($74.2M ARR) or Airtable ($478M ARR), Stacker's own financials are not public, and the platform's runway and multi-year longevity are genuinely unclear.
- Weak version control and complicated rollback (uibakery.io, 2025 — anecdotal, dated) — for teams with multiple internal editors iterating on a portal, the absence of a git-equivalent history or staging environment is a meaningful gap versus code-based alternatives.
Stacker vs the competition
Head-to-head on the aspects that actually decide the choice. The highlighted cell wins each row.
| Aspect | Stacker | Glide | Retool |
|---|---|---|---|
| Entry price (real use) | $199/mo (Plus — unverified) | $49/mo (Maker) | $10/user/mo (editors; viewers free) |
| Free tier | Trial only (30 days) | Yes (no publish since Oct 2025) | Yes (limited, Free plan) |
| Unlimited external users | Yes (Plus/Pro — unlimited external) | Unlimited personal; $5/work-email user (Business+) | Free viewers |
| Internal user cap | 10 (Plus) / unlimited (Pro) | Unlimited personal on Maker | By pricing tier |
| Native backend / DB | No — connects external sources only | Glide Tables (native) | PostgreSQL, MySQL, MongoDB, and more |
| AI features (2026) | Stacker AI GA (prompt-to-tool in 3-5 min) | GlideOS beta (prompt-to-app) | Retool AI (table generation, query assist) |
| Permissions / security | Strong (granular external data sharing, row- and field-level) | Good (row-owner model) | Strongest (SQL-level RBAC, SSO on all plans) |
| Design control | Low (opinionated grid, no custom CSS at Plus/Pro) | Low-medium (component library) | Low (pre-built components, highly capable) |
| Vendor lock-in | High — no code export; UI config is lost on migration | High — no export | Medium — SQL queries and logic are portable |
| Learning curve | Low (AI generator); medium (permissions design) | Lowest (spreadsheet-familiar) | High (requires SQL/developer comfort) |
Swipe the table sideways to see every competitor.
Pricing, for real
Free Trial
$0 (30 days)
30-day trial of Plus functionality; no free tier after trial expires. The clock starts from account creation — factor this into evaluation timelines.
Plus
$199/mo (unverified — confirm at stacker.ai)
3 apps, 100K records, 10 internal users (staff who build/manage), unlimited external users (clients/partners). 20 tables per app, 3 roles per app. External database connections included. This is the real-use entry tier and the tier most teams will start on.
Pro
$349/mo (unverified — confirm at stacker.ai)
Unlimited apps, records, users, tables, and roles per hackceleration.com (2026) — unverified. This is the tier required once Plus limits on apps (3) or internal users (10) are hit. The $150/mo jump from Plus to Pro is meaningful for small-team deployments.
Business (historical)
~$1,000/mo (adalo.com, 2025 — dated; unverified current)
Whitelabel branding, custom CSS, priority support. This tier has been referenced in older sources as the requirement for custom UI/branding. Verify current availability and pricing at stacker.ai — this figure is not confirmed against current Stacker pricing.
Enterprise
Custom
Custom SLA, advanced compliance, dedicated support. No public pricing. Required for organizations with HIPAA or other regulated-industry compliance needs.
Hidden costs to budget for
Connected data source TCO: Airtable Team runs approximately $20/seat/mo — 5 internal editors = $100/mo. Add Stacker Plus $199/mo and the real entry-point stack costs ~$299/mo before any Stacker overages or upgrade triggers.
No code export means migration is a rebuild — the sunk cost of a complex permissions configuration (multi-role portal with 3-5 stakeholder types) represents weeks of work that cannot be recovered when switching platforms (hackceleration.com, 2026).
Custom branding / whitelabel historically required the Business tier at approximately $1,000/mo (adalo.com, 2025 — dated); verify current pricing before budgeting any UI customization beyond the default grid.
If Pro ($349/mo) is needed due to hitting Plus app (3) or internal user (10) limits, the step-up is $150/mo with no intermediate option — plan-limit triggers require a full tier jump.
Value verdict
Stacker's pricing delivers value precisely for the use case it was designed for: a mid-size business deploying client or partner portals with unlimited external stakeholders over an existing Airtable or Salesforce investment. For that profile, $199-299/mo for the Stacker + data-source stack is competitive with the alternative of building the same portal in WeWeb or Bubble (where developer time is a real cost). For any team outside that profile — solo founders, early startups, design-forward brands, technical ops teams with SQL data — Stacker is overpriced relative to Glide ($49/mo), Retool (usage-based), or a custom React + Supabase stack.
What it'll cost you
Real monthly cost for three typical profiles — not the headline sticker price.
Individual founder / hobbyist
Not viable
per month
Assumptions
Solo use, prototype validation, no budget commitment
Stacker has no free tier after the 30-day trial. The minimum commitment is $199/mo (Plus — unverified). For this profile, Glide Maker ($49/mo) or Airtable's own Interfaces on Team ($20/seat) are the appropriate alternatives. Stacker is not designed for individual or hobbyist use.
Mid-size ops team, client portal
~$299/mo
per month
Assumptions
5 internal staff (editors), up to 100 external clients accessing the portal, Airtable Team as data source (5 seats), single app with 3 roles
Stacker Plus at $199/mo (unverified) covers unlimited external users and 10 internal users — the 5-editor Airtable Team base adds approximately $100/mo. Total stack: ~$299/mo. This is the target profile where Stacker competes favorably against building the same portal in WeWeb (requires developer time) or using Glide Business with 100 work-email users ($199 + 70 × $5 = $549/mo).
Larger deployment, multiple portals
$349-550+/mo (estimated)
per month
Assumptions
Multiple apps needed (beyond 3), or internal user count exceeds 10, or more complex role requirements
Pro tier at $349/mo (unverified) for unlimited apps/users/roles, plus data source costs (Airtable Business at $45/seat if records exceed 50K, or Salesforce licensing on top). The upper bound is genuinely unclear because both Stacker's current pricing and the connected-source upgrade costs are partially unverified — confirm all figures with Stacker directly before budgeting. Historical Business tier for whitelabel/custom CSS was approximately $1,000/mo (adalo.com, 2025 — dated).
What We See in Real Stacker Projects
Stacker projects arrive from a specific and recognizable pattern: an ops team has been managing a mature Airtable base for 6-12 months — a vendor database, a client CRM, a project tracker — and the moment they need to share write-access with external stakeholders (contractors, clients, partners), the shared-base-link approach breaks down. Privacy rules in Airtable are field-level, not row-level for external guests, and Airtable Portals add ~$120-150/mo without solving the granular permission problem. Stacker enters at that exact inflection point.
The AI generator's 3-5 minute demo-to-tool timeline is accurate for the standard internal-portal pattern. What the demo does not show is the permissions design phase — mapping which external user types see which records, can create which record types, and are blocked from which fields. On a portal with 3-5 stakeholder types and a data model of 15-20 Airtable fields, that design work runs a half-day to a full day even with AI assistance. This is the actual time investment, and teams that go in expecting a 30-minute deployment are usually surprised.
The design ceiling is the most predictable migration trigger. Stacker's grid is fixed: column layouts, card lists, forms, filtered tables. When a client sees the portal for the first time and asks for a custom logo in the header, custom button colors, or a branded domain with white-labeled UI, the answer is either 'this requires an upgrade we haven't priced in' or 'we need to rebuild on a different platform.' Teams that evaluate Stacker for branded client portals without pricing the historical Business tier ($1,000/mo — dated) or verifying current custom-UI availability are setting up that conversation.
Our field verdict
Stacker is a specialized tool — it does one thing well (gated multi-stakeholder portals over Airtable/Sheets data) and fails quickly outside that envelope. Evaluate it only if your use case maps directly to that pattern and your budget starts at $200+/mo from day one.
What the community says
The community around Stacker is smaller than Bubble, Airtable, or Glide — which is worth noting because smaller communities mean fewer Stack Overflow answers, fewer YouTube tutorials, and less third-party tooling around edge cases. Among users in the typical target persona (ops teams, B2B portals), the primary satisfaction driver is the permissions model and the AI generator speed. The primary frustration driver is pricing relative to feature delivery — the gap between what users expect at $199/mo and what the Plus tier provides (especially on design flexibility) is the dominant complaint thread across review sites.
Most common complaints
Pricing too high for features delivered — 'a lot of what should be basic requires the highest plan'
Limited design and UI customization — opinionated grid cannot produce branded interfaces without a high-cost tier
Heavy dependence on Airtable/Sheets reliability — when the connected source has downtime or hits limits, the Stacker portal follows
Weak version control and complicated rollback — no staging environment, limited history
No HIPAA compliance as standard — healthcare and regulated-industry teams cannot deploy without custom contractual arrangements
Most praised
- Fast to wire up a real internal tool or client portal without a developer — AI generator's 3-5 minute turnaround is specifically called out (hackceleration.com, 2026)
- Strong permissions model for client and partner data sharing — specifically the unlimited-external-user plus row-level visibility combination
- Good onboarding resources (Stacker School, Stacker Forum) that reduce time-to-first-tool
- Andreessen Horowitz Series A backing noted as a trust signal by enterprise evaluators
Deep dive
AI App Generator (Stacker AI, GA 2026)
The Stacker AI generator is the headline feature of the platform's 2026 repositioning and the most differentiated capability versus comparable portal builders (Softr, Noloco). A hands-on review (hackceleration.com, 2026) confirms the claim: a working internal tool — record list, detail view, filtered by role — can be generated in 3-5 minutes from a conversational description. The platform automatically connects the AI output to the configured data source (Airtable, Sheets), generating views and filters based on the existing schema. The practical limitation is that the AI generates within Stacker's layout constraints: you cannot prompt your way to a custom header, a non-grid layout, or custom CSS. For operations teams who want functionality over aesthetics, this is not a blocking issue; for teams where the portal is externally client-facing and brand consistency matters, it becomes the first friction point. The AI-native repositioning represents a genuine productivity improvement over template-based portal builders in the same tier.
Permissions & External Data Sharing
This is Stacker's strongest differentiated feature and the reason it competes effectively against Glide for B2B portal use cases. Stacker implements role-based permissions at the row, field, and action level — granular enough to configure one external user type (e.g., client) who can see and edit their own records but not records belonging to other clients, while a different external type (e.g., partner) can view all records but edit none. On Plus, 3 roles per app are available; Pro is unlimited. The structural difference versus Glide is pricing model: Glide charges $5/work-email-user beyond 30 on Business, making large external-user deployments expensive; Stacker's unlimited external users on Plus/Pro is the correct model for portals where the external user count is high and unpredictable. The configuration complexity scales with portal sophistication — a 5-role permission matrix with 20 tables requires methodical design, and Stacker's version control limitations mean mistakes are hard to roll back cleanly.
Data Layer Architecture
Stacker has no native relational backend. The platform is purely a front-end portal layer over external data sources — Airtable, Google Sheets, Salesforce, and 6,000+ additional tools via its automation layer. This architecture has a critical implication: every data limit and constraint from the connected source applies directly to what Stacker can display and process. An Airtable base on Team tier caps at 50,000 records; those 50,000 records are the ceiling for a Stacker portal built on that base. Stacker's own Plus plan cap of 100,000 records becomes moot if the Airtable base beneath it hits 50,000. Teams planning to use Stacker for large data sets must budget for the connected source's upgrade costs, not just Stacker's. There is also no SQL access, no computed fields at the Stacker layer, and no API builder — data transformation must happen in the source before Stacker displays it.
Editor & Learning Curve
The non-AI path through Stacker's editor follows a spreadsheet-familiar paradigm: connect a data source, choose a view type (list, form, table, kanban), configure columns/fields to display, set permission conditions. For a business user who knows their Airtable base well, this is genuinely low-friction — an experienced ops person can build a basic single-role portal without AI assistance in under an hour. The AI generator compresses this further to minutes for the standard case. Weakness: the layout system is opinionated, with a fixed grid that offers column-width adjustments and component selection but no free-form canvas, no pixel-level positioning, and no CSS access at Plus/Pro. Teams that want to build apps with this tool should evaluate whether the opinionated grid is acceptable before committing — it is the single most common migration trigger.
Version Control & Operational Tooling
Stacker's version control is its weakest operational dimension. Multiple anecdotal reviews describe it as weak or complicated (uibakery.io, 2025 — dated), and there is no git-equivalent change history, no named versions, and no staging environment at Plus/Pro. For an internal portal maintained by a single ops admin, this is manageable — mistakes are usually caught quickly and reversed manually. For a portal maintained by multiple internal users (up to 10 on Plus), the absence of rollback capability means a misconfigured permission rule or an accidentally deleted view has no automated recovery path. Teams in regulated industries or with change-control requirements should flag this as a gap before committing to Stacker. Contrast with code-based alternatives (Retool's SQL queries are portable; WeWeb exports code to git) where version history is a solved problem.
Product-Direction Risk & Platform Longevity
Stacker occupies a well-defined but narrow niche in a market with aggressive competitors: Softr, Noloco, Glide (with its AI generator), and Airtable Interfaces all compete directly for the 'portal over Airtable data' use case. Unlike Bubble ($74.2M ARR in 2024, per Sacra/Contrary Research) or Airtable ($478M ARR, 27% YoY growth per Sacra Aug 2025), Stacker's own financials are not public and its runway is unknown. The Series A from Andreessen Horowitz (crunchbase.com) provides credibility, but VC-backed niche software companies in competitive markets carry real longevity risk. This is not a prediction that Stacker will fail — the AI-native repositioning (Stacker AI, GA 2026) is a logical strategic bet. It is a statement that teams building multi-year workflows on Stacker should factor this risk into their evaluation and have a contingency plan. The note in the brief stands: do not confuse Stacker (stacker.ai, the app builder) with Stack AI (a separate enterprise AI agent startup that raised $16M in May 2025) or Stacker Holdings (a PE firm) — the entity is Stacker at stacker.ai.
Entity Disambiguation: Stacker AI vs. Lookalikes
This is an unusual consideration for a platform review, but the brief specifically calls it out as a search-behavior issue: the query 'Stacker' returns results for at least three unrelated entities. Stack AI (stackai.com) is an enterprise workflow automation platform for building AI pipelines — it raised a $16M Series A in May 2025 from Y Combinator and is unrelated to Stacker. Stacker Holdings is a private equity firm. The platform being reviewed here is Stacker at stacker.ai — previously known simply as Stacker, rebranded as 'Stacker AI' in late 2025 with the domain migration to stacker.ai. When searching for support documentation, community threads, or pricing information, always verify the URL includes stacker.ai and not stacker.app, stackai.com, or stackerhq.com to ensure you are reading about the correct product.
Comparison with Closest Competitors (Glide vs. Retool)
Glide ($49/mo Maker) beats Stacker on price by 4× for teams with small user counts — specifically, consumer-facing (personal email) users are unlimited on Glide's Maker tier. Stacker's advantage emerges when the user base includes work-email business users at scale: Glide charges $5-6/work-email-user beyond 30 on Business tier, making a 100-person internal portal on Glide Business cost $199 + (70 × $5) = $549/mo — more expensive than Stacker Plus. For B2B portals where all users have company email addresses and the count exceeds 30-40, Stacker Plus at $199/mo with unlimited external users is the economically rational choice. Retool wins on SQL-level data access, permissions sophistication for technical teams, and vendor trust signals (larger company, clearer financials), but requires developer comfort and has a steeper learning curve — it is not a competitor for the non-technical ops persona that Stacker targets.
Where the platform ceiling is
The question no affiliate blog answers: how far this scales before you outgrow it.
The ceiling
Plus limits: 3 apps, 100K records, 10 internal users (hackceleration.com, 2026 — unverified). Pro claims unlimited across these dimensions, also unverified. The practical ceiling before plan limits is architectural: Stacker has no native backend, so data complexity is bounded by the connected source. An Airtable Team base caps at 50,000 records — a Stacker portal on that base hits 50,000 records regardless of the Stacker plan. Salesforce API rate limits similarly constrain query frequency. UI flexibility (opinionated grid) and permissions model complexity are functional ceilings that teams hit before data volume becomes an issue for most use cases.
When to leave
Leave Stacker when custom UI or branding becomes essential (the grid cannot accommodate it without a likely Business-tier cost at historical ~$1,000/mo); when backend logic complexity exceeds what Airtable automations or Sheets scripting can handle; when Plus limits on apps (3) or internal users (10) require an upgrade to Pro ($349/mo) and the ROI on the incremental cost does not hold; or when product-direction risk becomes a board-level concern for a multi-year workflow commitment.
Where teams go next
Stacker data is not locked in Stacker — it lives in the connected Airtable or Sheets source, so export is always possible. The rebuild is the UI and permissions layer only. Teams migrating out of Stacker typically target WeWeb (for custom branded portals with a developer-adjacent team), Bubble (for full-stack logic and complex permission workflows), or Softr/Noloco (for a similar portal tier at different pricing). A mid-complexity portal migration is typically a 4-6 week project, with the primary time investment in recreating the permission matrix in the new platform.
Platform momentum
- Stacker AI rebranding completed late 2025 — domain migrated to stacker.ai and platform repositioned as 'AI-native' internal tools builder (stacker.ai/blog).
- Stacker AI (prompt-to-app generator) reached GA in 2026, with a hands-on review confirming working tools in 3-5 minutes from conversational prompts (hackceleration.com, 2026).
- Series A backed by Andreessen Horowitz (crunchbase.com) — specific amount and date not publicly disclosed; provides runway and credibility signal.
- Competing directly with Softr, Noloco, Glide (with GlideOS), and Airtable Interfaces (Omni GA June 2025, Superagent Jan 2026) — the market is becoming more competitive, not less, as Airtable adds AI-native interface building.
- Stacker financials not public — no ARR, headcount, or growth rate available; platform-direction risk is real and should be factored into multi-year workflow decisions.
Our outlook
Stacker is making a focused AI-native bet in a crowded niche. The bet is plausible — the AI generator is genuinely fast and the permissions model remains a differentiator — but the addressable market is smaller than Bubble or Airtable, and the competition is intensifying from all sides. Expect continued AI feature development and potential pricing adjustments; verify current pricing at stacker.ai before committing to multi-year deployments.
Who it's for
Mid-size business building client or partner portals over Airtable or Salesforce
Good fitUnlimited external users, granular row- and field-level permissions, and the AI generator make Stacker purpose-built for this exact use case — no competitor at the same price tier offers the same combination. The typical pattern is a proven Airtable base (6-12 months of validated data model) that now needs an external-facing interface.
Operations teams with existing Airtable or Sheets workflows wanting a polished interface
Good fitLow learning curve for Airtable-familiar users; AI generator accelerates initial setup dramatically; existing data stays in place and does not need to be migrated; Stacker School resources cover the common portal configuration patterns.
Early-stage startup or individual founder
Poor fit$199/mo minimum with trial-only free access; competitors such as Glide ($49/mo Maker) or Airtable Interfaces ($20/seat Team) are dramatically more affordable for small teams that don't yet need granular external-user permissions.
Team needing pixel-perfect branded app or custom UI
Poor fitStacker's opinionated grid does not permit custom CSS, free-form layout, or branded component design at Plus or Pro tiers; achieving this historically required the Business tier at approximately $1,000/mo (adalo.com, 2025 — dated), and current pricing for custom UI must be verified directly with Stacker.
Regulated industry team (healthcare, finance, legal)
Poor fitHIPAA compliance is not included as standard at any published tier (blaze.tech, 2025); teams with PHI, PII in financial contexts, or legal data must validate compliance requirements directly with Stacker before building — which may push the conversation to Enterprise pricing.
Developer or technical team needing SQL-level data access and custom backend logic
Poor fitRetool or a code stack (Supabase + React) is the correct tool — Stacker is a no-code front-end with no SQL access, no API builder, and no native backend, so technical teams will hit ceilings immediately that code-based alternatives handle natively.
Your first 30 days
A practitioner's runbook to get productive fast — the shortcuts we wish we'd known.
Start the 30-day trial. Connect your primary Airtable base or Google Sheet. Use the Stacker AI generator with a plain-language description of your portal — describe the tool's purpose, who will use it, and what actions they should be able to take.
Practitioner tip: The AI generator works best with a clean, well-structured Airtable base. Spend time on the data model before prompting Stacker AI — columns with clear, descriptive names and correct field types (single-select for statuses, linked records for relationships) produce much better AI output than a messy schema.
Build out roles and permissions — this is where Stacker's core value lives. Map which external users (clients, contractors, partners) see which records, which fields, and what actions they can take. This is the most time-intensive phase, even with AI assistance.
Practitioner tip: Start with 2-3 roles maximum and expand only after the core permission matrix is working. Overly complex role trees (5+ roles with many field-level exceptions) become hard to maintain and debug, especially given Stacker's limited version control.
Evaluate whether Plus ($199/mo — unverified) is sufficient (3 apps, 10 internal users, 100K records) or whether Pro ($349/mo — unverified) is needed. Track actual usage against plan limits weekly.
Practitioner tip: If your internal user count (staff who build and manage Stacker, not external portal users) is approaching 10, factor Pro pricing into the project budget before launch. Verify all current pricing directly with Stacker at stacker.ai — third-party figures cited in this review are unverified.
Monitor data source limits (both Stacker plan limits and connected source limits — Airtable base record cap, Sheets row limits). Track whether any feature need (custom CSS, whitelabel branding) is pushing toward a higher tier.
Practitioner tip: If custom UI becomes a requirement, model whether WeWeb or Bubble would deliver the same result at lower total cost before committing to a Stacker Business-tier upgrade. The rebuild cost (4-6 weeks) may be lower than the ongoing monthly price differential.
Alternatives worth a look
Glide
Read our reviewBetter when: When the team is small (under 30 work-email users) and budget is tight — Glide Maker at $49/mo with unlimited personal users is dramatically cheaper for consumer-facing internal tools and simple portals.
Airtable
Read our reviewBetter when: When editors and ops staff are the primary users (not external clients), the database model is the core product, and Airtable Interfaces or Omni provide enough UI surface without building a separate portal layer.
Retool
Read our reviewBetter when: When SQL-level data access, complex backend logic, and a technical ops or engineering team are the context — Retool's permissions model and data access depth are more sophisticated, and the user base has SQL comfort.
WeWeb
Read our reviewBetter when: When custom UI and branding are essential and the team has developer-adjacent skills — WeWeb + Supabase delivers branded portals with code export and true no-vendor-lock-in at comparable or lower all-in cost.
Bubble
Read our reviewBetter when: When full-stack logic, custom workflows, and a complex permission model beyond Stacker's grid are required, and the team can invest weeks in learning Bubble's WU-efficient patterns.
Frequently asked questions
Is Stacker AI the same as Stack AI or Stacker Holdings?
No — these are three different entities. Stack AI (stackai.com) is an enterprise AI workflow automation platform that raised a $16M Series A from Y Combinator in May 2025. Stacker Holdings is a private equity firm. The platform reviewed here is Stacker (stacker.ai) — an internal tools and portal builder that rebranded as 'Stacker AI' in late 2025. Always confirm you are reading about stacker.ai when researching this product.
Is Stacker worth it in 2026?
Stacker is worth the $199/mo entry (unverified — confirm at stacker.ai) if your use case maps closely to what it was designed for: a mid-size business building client or partner portals over Airtable, Sheets, or Salesforce, with multiple external stakeholders who need gated role-based access. If you have fewer than 30 work-email users, Glide's Maker plan ($49/mo) is cheaper. If you need SQL-level data access, Retool is more capable. If you need custom branded UI, WeWeb or Bubble are the better choice. Stacker is worth it only for the specific portal-over-Airtable pattern.
Does Stacker have a free plan?
No. Stacker offers a 30-day free trial only. After the trial, the minimum commitment is the Plus tier at $199/mo (unverified — confirm at stacker.ai). There is no permanent free tier or hobbyist plan. This is the most important pricing fact to know before starting a trial — budget planning must begin from month one.
What are Stacker's pricing tiers in 2026?
Based on a third-party hands-on review (hackceleration.com, 2026), Stacker offers: Plus at approximately $199/mo (3 apps, 100K records, 10 internal users, unlimited external), and Pro at approximately $349/mo (unlimited apps/records/users — unverified). A historical Business tier at approximately $1,000/mo for whitelabel/custom CSS has been referenced in older sources (adalo.com, 2025 — dated) but must be verified. Stacker does not maintain a stable public pricing page — always confirm current pricing directly at stacker.ai before purchasing.
How does Stacker handle external users (clients, partners)?
External users — clients, contractors, partners — are unlimited on both Plus and Pro tiers. This is Stacker's most important pricing advantage over Glide, which charges $5/work-email-user beyond 30 on Business tier. For a B2B portal with 100+ external stakeholders, Stacker's flat-tier model is significantly cheaper than Glide Business with equivalent user counts. External users get role-based access to specific data, with row- and field-level visibility controls configured by the internal admin team.
Can Stacker replace Airtable Interfaces?
Stacker and Airtable Interfaces serve overlapping but different use cases. Airtable Interfaces (and Omni, GA June 2025) are built into Airtable and cost nothing beyond the Airtable subscription — they work best for internal teams where the editors and the interface users are the same people. Stacker adds a separate permission layer for external users (clients, partners) who should not have Airtable editor access. If your portal users are all internal Airtable editors, Interfaces + Omni may be sufficient for free. If external clients or partners need write access to specific data, Stacker's permission model justifies the additional cost.
What happens to my data if I leave Stacker?
Your data is not stored in Stacker — it lives in your connected source (Airtable, Sheets, Salesforce). You can export it from the connected source at any time, independently of Stacker. What you cannot take with you is the Stacker UI configuration and permissions matrix: all views, role definitions, permission rules, and form configurations must be rebuilt on the new platform. For a complex multi-role portal, this rebuild represents a meaningful time investment (typically a 4-6 week project for a mid-complexity portal migration to WeWeb or Bubble).
Is Stacker HIPAA compliant?
No — HIPAA compliance is not included as standard at any published Stacker tier (blaze.tech, 2025). Organizations handling protected health information (PHI) must validate compliance requirements directly with Stacker before building. This likely requires an Enterprise agreement with custom DPA terms. For healthcare applications, alternatives such as Retool (which has HIPAA-compliant options with proper configuration) or a custom stack (Supabase with HIPAA-eligible Business Plan + custom Next.js) should be evaluated.
How does the Stacker AI generator work?
The Stacker AI generator (GA 2026) takes a conversational description of the internal tool you want to build — 'I need a portal where my clients can see their project status and upload files, and my team can update those statuses' — and generates a working set of views, forms, and filtered displays in approximately 3-5 minutes, automatically connected to your Airtable or Sheets data source. The AI works within Stacker's design constraints (opinionated grid, component library) and cannot produce custom CSS or pixel-perfect branded layouts. For standard internal portals where functionality matters more than brand aesthetics, the output is production-ready.
We're outgrowing Stacker — can RapidDev help us migrate?
Yes. The most common Stacker migration triggers are: custom UI requirements that exceed Stacker's grid, backend logic complexity that requires SQL or API building, or pricing that no longer justifies value relative to a custom stack. RapidDev typically scopes Stacker-to-WeWeb or Stacker-to-Bubble migrations as 4-6 week projects for mid-complexity portals. The data itself migrates directly from your connected Airtable/Sheets source — the rebuild is the UI and permissions layer. If you're evaluating whether it's time to migrate, a free scoping call with our team is available at rapidevelopers.com/contact.
Outgrowing Stacker?
- We build production apps on these platforms
- Custom build when you hit the ceiling
- Fixed price, you own 100% of the code
30-min call. No commitment.