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.
U.S
$9.99 · 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 U.S. Lighthouse Guide: map the core Travel 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 user engagement due to lack of community features.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficulty in finding lighthouses without a search filter.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of offline access to lighthouse information.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No personalized tracking of visits.
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.
U.S. Lighthouse Guide is your offline companion to more than 800 lighthouses across the United States. Explore the coasts and the Great Lakes, dig into the history and details of each light, and keep a personal log of the ones you've visited. Now it also shows you the lights nearest to wherever you happen to be. EXPLORE THE COAST • Browse lighthouses state by state, each with photos and rich descriptions • Detailed records: location, history, characteristics, and visitor info • See where each lighthouse stands on the map • Filter the map by state, or by the details you care about FIND LIGHTHOUSES NEAR YOU • See which ones are closest to you and how far away each is • Choose how far to look — widen or narrow the search radius any time • Recenter the map on where you are with one tap LISTEN, HANDS-FREE • Tap the speaker icon on any lighthouse page to have its history read aloud — pick your voice and speed in Settings • Podcast-style mini-player: pause, resume, or skip back and ahead a sentence at a time • Keeps reading while you browse other tabs or with your screen locked KEEP YOUR LOG • Log visits, favorites, and passport stamps • Rate each one and add your own notes and visit dates • Watch your progress grow state by state • Syncs automatically across your iPhone and iPad via iCloud — no sign-in required BUILT FOR THE ROAD • Works offline — lighthouse data, history, and main photos are bundled in the app (live maps and full photo galleries need a connection) • Directions open in the navigation app you prefer — Apple Maps, Google Maps or Waze • No account, no sign-up, no ads, no tracking Whether you're a lifelong "lighthouse bagger," chasing passport stamps, or just planning a coastal road trip, U.S. Lighthouse Guide helps you discover, find, and remember the beacons along the way. Privacy policy: https://lighthousefriends.com/privacy-policy.html
Written user reviews are not shown here. Check current App Store reviews >
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.