Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
Driven: Speed Tracker
Driven is the precision speed tracker built for car enthusiasts who want real data, not estimates.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Driven: Speed Tracker: map the core Navigation workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Implement fallback methods for speed calculation.
Assumption to check: Accuracy of speed tracking can be affected by GPS signal.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to customize alerts and notifications.
Assumption to check: Limited customization options for users.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize app performance for better battery usage.
Assumption to check: Can drain battery quickly during prolonged use.
Validate with people who use this workflow before building.
Hypothesis 4
Add options to share driving stats with friends.
Assumption to check: Lack of social sharing features.
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Driven is the precision speed tracker built for car enthusiasts who want real data, not estimates. Track every trip automatically and get a full breakdown of how your car performs — from your 0-60 time to top speed, acceleration curves, and beyond. Whether you're logging a Sunday drive or pushing your car on a back road, Driven captures every detail. WHAT YOU GET • Automatic trip tracking — starts and stops with your drive • 0-60 mph timing, accurate and repeatable • Top speed and speed-over-time breakdown • Trip history with detailed per-run stats • Clean, data-first interface built for enthusiasts DRIVEN PRO Unlock the full performance suite: • Advanced acceleration and braking analytics • Deeper trip breakdowns and comparison tools • Full session history with exportable data Driven is built for legal use on private roads and closed courses. Always obey traffic laws and speed limits on public roads. Know your numbers. Know your car. Support Email: [email protected] Privacy URL: https://www.trydriven.app/privacy Support URL: https://www.trydriven.app/support This app follows the Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
Redux
React Navigation
Victory Native
Expo Location
BUILD KIT DIFFICULTY
Advanced
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
