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.
Buoy Map puts live NOAA National Data Buoy Center (NDBC) observations on a worldwide map of ocean and lake stations.
$1.99 · 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 Buoy Map: map the core Weather 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 buoy data sources
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No offline access
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchase clarity
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Single unit of measurement
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.
Buoy Map puts live NOAA National Data Buoy Center (NDBC) observations on a worldwide map of ocean and lake stations. Tap a buoy to see what that station is actually reporting right now. Conditions typically update about every 30 minutes, depending on the station. WHAT YOU GET • Interactive map of NOAA / NDBC buoys around the world • Opens near your location on first launch • Remembers your last map view, including pan and zoom • Keeps the last loaded map if you lose signal, so you can still check what you already loaded when offline • 72-hour wave height graph when the station reports wave data • Light and dark map themes BUOY DATA Each station has a different set of instruments, so not every buoy reports every field. When the data is there, Buoy Map can show: • Wind direction, speed, and gusts • Wave height, dominant period, average period, and wave direction • Air pressure and pressure trend • Air temperature and water temperature • 72-hour wave height graph WHO IT’S FOR Surfers, sailors, fishers, paddlers, and anyone who wants a quick look at real water conditions before heading out or while already on the water. No account. No feed of extra forecasts mixed in. Just the buoy map and the observations. CREDITS Map tiles: OpenStreetMap. Map engine: Leaflet. Suggestions are welcome. I plan to keep improving Buoy Map, enjoy! Together with the promotional text, that should fill both App Store Connect fields. I can also write a 30-character subtitle if you want one.
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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.