TimeLogger app PRD: ship a freelance tracking MVP
On this page: a detailed TimeLogger app Product Requirements Document (PRD) for a freelancer time tracking MVP, a head-to-head on which AI builder can ship it fastest (Lovable, v0, Cursor, Claude Code, Replit), actionable steps, and a fill-in-the-blanks prompt to start building, plus internal resources for similar apps.
What this is
A TimeLogger app PRD lays out concrete requirements for a web app that lets freelancers track work per project by starting and stopping timers, visualizing daily hours, and exporting timesheets. The PRD describes the UI flows (start/pause/reset, per-project logs), data structure, metrics, and must-haves for launch. It enables PMs and devs to align before kicking off with AI development tools such as v0, Lovable, or Claude Code. A real PRD puts engineering first: scope, edge cases, and at least two measurable outcomes, like total shipped time or user adoption goals.
Compared to alternatives
| Option | Best for | Trade-off |
|---|---|---|
| Lovable | Quick UI prototypes, especially forms and basic dashboards. Fast feedback from non-devs. | Limited customization: tricky if you want advanced timer logic or multi-user features right away. |
| v0 | Functional MVPs fast, especially if you want a backend wired up (Supabase, Stripe). Generate code, tweak, redeploy. | UI is basic and you'll need to refine code for production polish or add custom auth. |
| Cursor | Hands-on builders who want AI pair-programming inside VSCode, and are okay editing code. | Not no-code, steep learning curve if you want to stay 100% visual, but more control for devs. |
| Claude Code | Generating clear, annotated code for small web apps or single features-especially clean separation of frontend/backend. | No deployment; you’ll need to couple with your own infra (Vercel, Replit). |
| Replit | Full-stack playground, deploy and iterate quickly. Good for quick real deployments and in-browser coding. | Much less opinionated on structure-easy to get messy, and limited custom AI code gen compared to v0. |
A real example
Product Requirements Document (PRD) for TimeLogger App
Summary: TimeLogger is a lightweight web tool for freelancers to track working hours by project. It features start/stop timers, project-based logs, exportable reports, and daily/weekly time visualization. The MVP must enable a freelancer to log hours for at least 5 projects, see a timeline for today, and export a CSV of their entries.
Goals/Non-goals:
- GOAL: Reduce manual timesheet entry by 80% over manual spreadsheets in first month after launch.
- GOAL: Enable users to export their last 7 days of work logs (CSV).
- NON-GOAL: Client invoicing or billing integration.
User Stories:
- As a freelancer, I want to start a timer on a project and see my running log so I don’t forget hours worked.
- As a user, I want to view today’s timeline so I can spot gaps or overlaps.
- As a user, I want to export all time entries for last week as a CSV.
Features & Flows:
- Home: List of my projects (add/edit/delete)
- Timer: Start, pause, resume, and reset per project
- Daily Timeline: Visualizes today’s tracked blocks (e.g., 9–11, 11:20–12)
- Export: One-click CSV export, past 7 days
- Auth: Email+code auth (no password)
Success Metrics:
- 70% retention at week 2
- 40% reduction in manual time entry versus user baseline
Tech Stack (AI Builder Fit):
- UI: Use v0.dev for React+Supabase code for timers and logs.
- Backend: Supabase (auth, projects, timeblocks)
- Hosting: Vercel
Risks:
- Users tracker fatigue if multiple click/tap friction
- Cross-device sync (mobile/desktop) not supported in MVP
Out of Scope:
- Invoicing
- Real-time team collaboration
Launch Target:
- 3 weeks to working MVP
- Capable of onboarding 20 freelancers with real timesheet volume.
How to use this
- Define your freelancer tracking MVP: Write down the bare minimum features: project list, timer start/stop per project, daily hours view, and CSV export. Skip billing, advanced reporting, or team features in v1.
- Pick your build tool: For speed and code ownership, v0.dev is ideal-generate frontend and backend in React + Supabase. If your team wants no-code, Lovable is fastest for UI, but lacks backend. Cursor or Claude Code are good for devs wanting full flexibility.
- Draft a PRD that AI can read: Be extremely explicit: UI wireframes (sketch or describe), user stories, data structure, and measurable goals (e.g., 80% less manual entry). See the filled PRD below. The clearer, the better AI builders perform.
- Feed your PRD to the chosen AI builder: Paste the PRD prompt directly into v0.dev, Claude Code, or Cursor. Add clarifying notes, like 'use Supabase for auth/projects', and specify what code you want reviewed.
- Test, measure, and scope next steps: Deploy your MVP (Vercel or Replit), onboard a small group (5–20 users), and measure if you really get less manual work and achieve 70% retention at week 2. Iterate before expanding feature scope.
FAQ
What’s the best AI builder for a TimeLogger MVP?
If you want a ship-fast MVP with a real backend, v0.dev is the sweet spot-it generates React and Supabase code you actually control and can deploy to Vercel. Lovable is quickest for front-end sketches but doesn’t give you a database. Cursor is best if you want AI inside VSCode and you're comfortable tweaking real code.
How do I update the TimeLogger PRD after first user feedback?
Log direct user friction (e.g., timers hard to find, awkward CSV export), add clear metrics (like '80% of sessions reach export'), and flag any new must-haves. Keep scope tight-don’t add invoicing until core tracking works, so feedback remains focused on the daily flows.
Can I plug Stripe billing into this MVP?
Not out-of-the-box. For just time tracking, MVPs typically skip billing. But if you’re using a builder like v0.dev, you can generate new features and wire in Stripe later. Ship focused MVP first; layer billing once retention's healthy.
Is Supabase necessary, or can I use something lighter?
Supabase is a fast-start for auth and CRUD; you could swap in Firebase or local storage for a solo build. But for tracking across devices and onboarding users, Supabase’s hosted Postgres and auth are hard to beat-especially with AI-generated code.
How do I export time logs to CSV from the MVP?
Include a backend endpoint (e.g., /api/export) that queries time logs for the logged-in user over the last 7 days. Format as CSV string, trigger frontend download. Most AI builders can scaffold this if you specify 'CSV export' clearly in your PRD.