Best for
Freelancers and small teams who need a time-tracking UI they can customize in an afternoon
Stack
A ready-made Timer Dashboard UI you can fork, run, and customize with the prompt pack below.
What's actually inside
The honest engineer's breakdown — what the Timer Dashboardtemplate does, how it's wired, and where it's opinionated.
This template is a self-contained time-tracker built entirely in the browser — no backend required to fork and run. The hero element is the Active Timer Card: a large count-up display with Start, Stop, and Reset controls implemented using setInterval (or useInterval). A Project Selector (shadcn/ui Select or Combobox) lets users tag each session to a project before starting the timer.
Completed sessions are appended to a Session Log Table (shadcn/ui Table) showing duration, project, and date with status Badges. A Daily Summary BarChart (Recharts) renders hours logged per day for the current week, and a Total Hours KPI Card shows the weekly total and daily average at a glance.
The honest caveat: session data lives only in component state by default — it resets on every page refresh. There is no persistence layer out of the box. The template also has no multi-device sync; if you open it in two tabs, the timers are independent. The setInterval-based timer drifts in background tabs because browsers throttle inactive tab intervals — the gotcha section below shows how to fix this with a timestamp approach.
Key UI components
Active Timer CardLarge count-up display with Start, Stop, Reset controls via setInterval
Project Selectorshadcn/ui Select or Combobox to tag timer sessions to a project
Session Log Tableshadcn/ui Table listing completed sessions with duration, project, date
Daily Summary BarChartRecharts BarChart showing hours logged per day for the current week
Total Hours KPIshadcn/ui Card showing weekly total hours and daily average
Session Status Badgesshadcn/ui Badge colored by session state: running, paused, completed
Libraries it leans on
rechartsWeekly hours BarChart and ResponsiveContainer
date-fnsDuration formatting (HH:MM:SS) and weekly date range calculation
shadcn/uiCard, Table, Select, Badge, Button components throughout
Fork it and get it running
Forking this template takes under 5 minutes and requires no local setup — the timer runs entirely in the V0 browser editor.
Fork the template
Open https://v0.dev/chat/community/6jzQn30dRD9 and click the 'Fork' button in the top-right corner. A new V0 chat opens with the timer dashboard already rendering in the preview pane — Active Timer Card, Session Log Table, and Daily Summary BarChart all visible with mock data.
Tip: A free V0 account is all you need. Forking does not consume credits.
You should see: A new V0 chat opens with the Timer Dashboard preview loaded, showing the active timer display and session log.
Update project names and branding
Press Option+D to open Design Mode. Click the dashboard title and update it to your app or team name — free, no credits. Click the Project Selector options to update the placeholder project names (e.g. 'Project A', 'Project B') to your actual client or project names. Update color tokens if needed.
You should see: Your project names appear in the Project Selector and the dashboard title updates to your brand.
Add localStorage persistence
Type this prompt in the V0 chat: 'Add localStorage persistence so timer sessions survive page refresh; save and load from a timer-sessions key'. V0 will wrap the session state in useEffect hooks that read from localStorage on mount and write on every session stop. Review the generated code to confirm all localStorage calls are inside useEffect — not in the component body.
Tip: Sessions stored in localStorage are per-browser and per-domain — they won't sync between devices.
You should see: Completed sessions in the Session Log Table persist after a page refresh.
Add a backend (optional)
If you need multi-device sync or team-shared sessions, open the Vars panel and add NEXT_PUBLIC_SUPABASE_URL and NEXT_PUBLIC_SUPABASE_ANON_KEY. Then prompt V0: 'Save completed sessions to Supabase using NEXT_PUBLIC_SUPABASE_URL — create a timer_sessions table with id, project_id, started_at, ended_at, duration_seconds'. Supabase will act as the persistent store instead of localStorage.
Tip: Skip this step if you only need solo single-device tracking — localStorage is simpler and has zero setup.
You should see: Sessions are inserted into your Supabase table on Stop and loaded on mount.
Publish to Vercel
Click Share → Publish → 'Publish to Production'. V0 builds and deploys the Next.js app to a Vercel subdomain in under 60 seconds. Once live, open the URL in any browser to confirm the timer starts, sessions are logged, and the BarChart updates correctly.
You should see: The timer dashboard is live at a .vercel.app URL and works correctly in the browser.
Share or embed the URL
Share the live Vercel URL with your team or embed it in a Notion page using the Embed block for lightweight team time tracking. For custom domains, go to Vercel Dashboard → your project → Settings → Domains → Add Domain and follow the DNS instructions.
You should see: Team members can access the timer dashboard without any local setup.
The prompt pack
Copy-paste these straight into v0's chat to customize the Timer Dashboardtemplate. Each one names this template's own components — no generic filler.
Add Pomodoro mode with break timer
Adds a full Pomodoro workflow to the existing Active Timer Card without replacing the count-up mode — users can toggle between time-tracking and Pomodoro from the same interface.
Add a 'Pomodoro' toggle Button next to the existing Start/Stop/Reset controls in the Active Timer Card. When toggled on, the timer counts down from 25:00 instead of counting up. On reaching 00:00, play a short browser Audio beep using the Web Audio API and automatically start a 5-minute break countdown in the same display. Show the current mode ('Focus' or 'Break') as a shadcn/ui Badge above the timer.Color-code projects across all components
Creates visual continuity between the Project Selector, Session Log Table, and Daily Summary BarChart so users can scan time distribution by project instantly.
Assign a consistent color to each project option in the Project Selector. Carry that color through: add a color dot to the left of each project name in the Session Log Table rows, and color-code the BarChart bar segments in the Daily Summary so each project has a distinct color stack per day. Store the color map in a projects.ts config file keyed by project name.
Export the week's sessions as a CSV
Generates a client-side CSV of the current week's session log — useful for freelancers who bill clients from a time report.
Add an 'Export Week' shadcn/ui Button above the Session Log Table. On click, filter the current sessions to those within the current ISO week (using date-fns startOfISOWeek and endOfISOWeek), format them as a CSV with columns Date, Project, Duration (minutes), Notes using papaparse, and trigger a browser download named time-report-YYYY-WW.csv where YYYY-WW is the current year and ISO week number.
Persist sessions to a Supabase table
Replaces browser-local session storage with a real Supabase database so sessions are persistent across devices and survive cleared browser storage.
Install @supabase/supabase-js. Add NEXT_PUBLIC_SUPABASE_URL and NEXT_PUBLIC_SUPABASE_ANON_KEY to the Vars panel. Create a timer_sessions table in Supabase with columns id (uuid), project_id (text), started_at (timestamptz), ended_at (timestamptz), duration_seconds (integer). Replace the localStorage persistence with supabase.from('timer_sessions').insert({ project_id, started_at, ended_at, duration_seconds }) on Stop, and .select().order('started_at', { ascending: false }).limit(50) on mount to reload the Session Log Table.Add Clerk authentication so each user sees only their sessions
Adds per-user authentication so each signed-in user sees only their own timer sessions in the Session Log Table and Daily Summary BarChart.
Install @clerk/nextjs. Wrap the root layout in ClerkProvider with NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY from the Vars panel. Add clerkMiddleware to middleware.ts to protect the /dashboard route. In the Supabase queries, filter all timer_sessions fetches with .eq('user_id', userId) where userId comes from auth().userId from @clerk/nextjs/server. Add a UserButton component from @clerk/nextjs in the top navigation bar for sign-in and sign-out.Post session completions to a Slack channel
Notifies a Slack channel every time a timer session completes — useful for remote teams who want passive visibility into logged time.
Create app/api/webhooks/session-complete/route.ts. When the timer stops, POST to this route handler from the client with the session data (project, duration_seconds, started_at). The route handler sends a Slack message via fetch to the Incoming Webhooks URL stored in SLACK_WEBHOOK_URL env var. Format the message: 'Logged [duration] on [project]'. Add SLACK_WEBHOOK_URL to the Vars panel.
Gotchas when you extend it
The failures people actually hit when they push this template past its defaults — and the exact fix for each.
Timer freezes or drifts when the browser tab is hiddenWhy: Browsers throttle setInterval in background tabs to at minimum 1-second intervals — or longer. A timer that accumulates a counter variable on each tick will drift or completely freeze when the tab loses focus.
Fix: Switch to a start-timestamp approach: store Date.now() in state when the user clicks Start, and compute elapsed time as Date.now() - startTime on each interval tick instead of incrementing a counter variable.
Refactor the timer to use a start timestamp stored in state and compute elapsed time as Date.now() minus startTime on each interval tick instead of incrementing a counter
ReferenceError: localStorage is not defined during SSRWhy: V0 sometimes places localStorage calls directly in the component body or at module scope. Next.js executes these during server-side rendering before the browser exists, throwing a ReferenceError.
Fix: Move all localStorage.getItem and localStorage.setItem calls inside useEffect hooks with proper dependency arrays. Never access localStorage outside a useEffect in a Next.js component.
Move all localStorage.getItem and localStorage.setItem calls inside useEffect hooks so they only run in the browser
Session log disappears on a new Vercel preview URLWhy: localStorage is scoped to the domain and browser. Every new Vercel preview deployment gets a unique URL, so there is no previously stored data at that origin.
Fix: For solo use this is expected behaviour — note in your FAQ that the app is intentionally client-only. For team or cross-device use, switch to a Supabase backend using the advanced prompt in the prompt pack above.
The component at https://ui.shadcn.com/r/styles/new-york-v4/combobox.json was not foundWhy: V0 may reference a combobox as a standalone shadcn/ui registry item, but the combobox pattern in shadcn/ui is a composition of Popover + Command, not a separate installable component.
Fix: Ask V0: 'Rebuild the project combobox using a shadcn/ui Popover wrapping a Command component instead of importing a non-existent combobox'.
Rebuild the project combobox using a shadcn/ui Popover wrapping a Command component instead of importing a non-existent combobox
Template vs. custom — the honest call
A forked template gets you far, fast. Here's where it holds up, and where you'll outgrow it.
The template is enough when
- Solo freelancer tracking billable hours for client invoicing
- Pomodoro focus tool for personal productivity with no backend needed
- Small team sprint logging with weekly CSV exports to a spreadsheet
- Internal startup tool for logging meeting or work session durations without budget for a commercial tracker
Go custom when
- You need payroll integration with Gusto or QuickBooks to calculate gross pay from logged hours
- Billable rate calculation and automated invoice generation are required
- Manager approval workflows for logged hours need to be built in
- Jira or Linear issue tagging per session requires API tokens and server-side logic V0 won't generate
RapidDev extends your V0 timer into a full billable-hours tool — Supabase backend, per-client rates, PDF invoices — in 2–3 days.
Frequently asked questions
Is the Timer Dashboard V0 template free to use?
Yes. V0 community templates are free to fork. You need a free V0 account and forking does not consume credits. AI chat edits after forking use credits from your V0 plan.
Can I use this template in a commercial product or for client work?
Yes. Code generated by V0 is yours to use commercially without attribution. Recharts is MIT licensed and shadcn/ui is MIT licensed. Check any additional packages you install, but the core stack has no commercial restrictions.
Why does my fork's timer break in the V0 preview after I add localStorage?
The V0 preview sandbox may not persist localStorage between renders, and esm.sh module resolution can fail for some packages. If the timer works locally or on Vercel but not in the V0 preview, that is expected — click Share → Publish to test the real deployed build.
My session data disappears every time I refresh the page — is that a bug?
No — the base template stores sessions only in React component state, which resets on refresh. Use the localStorage prompt in Step 3 of the fork guide to add persistence. For multi-device or team use, the advanced Supabase prompt in the prompt pack adds a real database backend.
How do I add a database so sessions sync across devices?
Use the 'Persist sessions to a Supabase table' advanced prompt in the prompt pack. Add NEXT_PUBLIC_SUPABASE_URL and NEXT_PUBLIC_SUPABASE_ANON_KEY to the Vars panel, then paste the prompt into V0 chat. It creates the table schema and replaces localStorage with Supabase insert/select calls.
Can I add a Pomodoro mode to the existing timer?
Yes — use the 'Add Pomodoro mode with break timer' quick prompt from the prompt pack. It adds a toggle next to the existing Active Timer Card controls without replacing the count-up mode, so both modes coexist in the same template.
Can RapidDev turn this into a full billing and invoicing tool?
Yes. RapidDev extends V0 timer templates to include Supabase backends with per-client billing rates, PDF invoice generation, and Vercel deployment — typically ready in 2–3 days.
Outgrowing the template?
RapidDev turns v0 prototypes into production apps — real auth, database, and payments — at $13K–$25K.
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