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.
A wind map up to 14 days ahead, NOAA nautical charts with your GPS position, the marine forecast from your local NWS office, live buoy reports, tides and currents: everything you check before leaving the dock, in one ...
$4.99 · 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.
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Combine features and design from your favorite apps.
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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 Wind & Tides: Marine Forecasts: 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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Affiliate link: CloneChart may earn a commission at no extra cost
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
A wind map up to 14 days ahead, NOAA nautical charts with your GPS position, the marine forecast from your local NWS office, live buoy reports, tides and currents: everything you check before leaving the dock, in one app for your home waters. One-time purchase. No subscription, no account, no ads. The wind map and NOAA charts cover US waters wherever NOAA publishes a chart. The marine forecast, live buoy reports, tides and currents are per region: 30 regions so far, listed below. If your home waters aren't there yet, request them at windandtides.com. Built for boating, sailing, fishing, kayaking, paddleboarding, windsurfing, wing foiling, kiteboarding, and open water swimming. Sailors have used Wind and Tides since 2011, and the marine and weather forecasts, tides, currents and buoy reports each link back to their NOAA source page. SUPPORTED REGIONS California • San Francisco Bay • San Francisco Offshore • Monterey Bay • Morro Bay and Port San Luis • Santa Barbara • Los Angeles • Catalina and Channel Islands • Newport Beach and Dana Point • San Diego Pacific Northwest • San Juan Islands • Port Angeles • Port Townsend • Puget Sound Hawaii • Honolulu and Oahu South Shore Northeast • Portland Maine and Casco Bay • Boston and Massachusetts Bay • Cape Cod Bay and Plymouth • Buzzards Bay and New Bedford • Martha's Vineyard and Nantucket • Newport and Narragansett Bay • Block Island • Long Island Sound East • Long Island Sound West Mid-Atlantic • Chesapeake Bay North • Chesapeake Bay South Florida and Gulf Coast • Fort Lauderdale • Miami and Biscayne Bay • Tampa Bay and St. Petersburg • Pensacola • Galveston Bay WHAT'S INSIDE • NOAA ENC nautical charts: depths, hazards, buoys, channel markers, with your GPS position, course and speed • Wind map: speed and direction animated over the chart, up to 14 days ahead • NWS coastal waters forecasts from your local forecast office: wind, seas, small craft advisories, and gale warnings through day 5 • NOAA tide predictions • NOAA current predictions • NDBC live buoy observations • NWS gridded weather forecasts • Wind models: NOAA HRRR, NBM, and GFS; ECMWF open data Wind and Tides surfaces public NOAA, NWS, and NDBC data and ECMWF open data, and is not affiliated with these organizations. Don't see your region? Request it at windandtides.com.
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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 customization options for notifications
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inconsistent data loading times
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No offline mode
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Basic UI design
Validate with people who use this workflow before building.
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.