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.
It's hard to remember the score in tennis, especially after a long point which distracts everyone
$5.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for WatchPoint: map the core Health & Fitness workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Limited workout variety and customization options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of social features and community engagement
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inconvenient nutrition logging interface
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Slow performance with large data sets
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
It's hard to remember the score in tennis, especially after a long point which distracts everyone. Use WatchPoint to keep track of the score on your Apple Watch as you play. WatchPoint keeps track of the game score, number of games and sets won. Start WatchPoint, select the number of sets you intend to play, and hit play. Tap on the winner's score after each point to add that point to the score. Watchpoint displays the score in brilliant large type that's easy to read. Hit the wrong score? Just do a swipe right to left on the watch to bring up the Undo menu. If the end of the set is tied, you get to choose between scoring using normal win by two or using a tiebreaker. There's even a setting for no-ad scoring and to adjust the number of points for a tiebreaker. When you're done playing, your game history in sets appears in the iPhone iOS app. If you allow the app to access your calendar, it will record your tennis scores directly into your calendar. WatchPoint displays the server score on top, so just read top to bottom for normal scoring. No more arguments, bad feelings, and wrong scores. For the cost of a can of balls, you can keep the score right on your Apple Watch. WatchPoint integrates with the Health App, to indicate that you are starting a tennis workout session. It also does this to keep WatchPoint in the foreground while you are playing your point, so it will be running when you're ready to enter the score. Other than data normally stored within the Health App for a workout session, no other health related data is stored or accessed or retained by WatchPoint.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.