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
WatchDrive
Drive safer with WatchDrive — your personal drowsiness alert system on Apple Watch.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 included15 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 WatchDrive: map the core Lifestyle 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
Encourage user reviews through prompts and rewards.
Assumption to check: Lack of user reviews and feedback can deter new users.
Validate with people who use this workflow before building.
Hypothesis 2
Offer additional functionalities like fuel tracking or vehicle maintenance logs.
Assumption to check: Limited features may not satisfy all driving-related needs.
Validate with people who use this workflow before building.
Hypothesis 3
Implement clear explanations of premium features and value.
Assumption to check: In-app purchase confusion can lead to user frustration.
Validate with people who use this workflow before building.
Hypothesis 4
Provide clear privacy policies and options to control data sharing.
Assumption to check: Privacy concerns about tracking location.
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
Drive safer with WatchDrive — your personal drowsiness alert system on Apple Watch. Long drives and night trips can lead to dangerous drowsiness behind the wheel. WatchDrive continuously monitors your heart rate and alerts you with a gentle alarm if your pulse drops below your personalized threshold for a preset amount of time — a reliable sign that you might be drifting off. Key Features: • Real-time heart rate monitoring directly on your Apple Watch. • Customizable heart rate threshold and alert delay time to fit your needs. • Standalone app — no iPhone required. • Intuitive and minimalistic interface designed for quick setup and ease of use. • Discreet vibration and sound alarms to help you stay awake and focused. • Optimized for watchOS 11 and Apple Watch devices. Why WatchDrive? Fatigue and microsleeps while driving are among the leading causes of accidents worldwide. With WatchDrive, you get an early warning system that helps you stay alert and prevent potentially dangerous situations. Whether you’re commuting, on a long road trip, or driving professionally, WatchDrive is your reliable companion to keep you safe.
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
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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.
