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.
Access accurate marine charts, intelligent routing, live AIS, and weather forecasts with Orca
Free · 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 Orca: Boat GPS, Charts, Routes: map the core Navigation 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 offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: User interface can be cluttered
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Paid features may be confusing to access
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.
Access accurate marine charts, intelligent routing, live AIS, and weather forecasts with Orca. Trusted by hundreds of thousands of sailors and powerboaters in the United States and across the world. Navigate confidently with clean charts - Modern and easy-to-read marine charts - Performant and responsive no matter how fast you zoom, pan, and rotate - Clear readability with both day and night modes Plan in seconds with smart routing - Sail routing powered by weather forecasts and your boat’s polar diagram - Automatic route recalculation if wind or other conditions change - Engine routing that finds a route to your destination instantly One step ahead of bad weather - Weather forecasts for wind, waves, currents, and tides - Accurate hour-by-hour ECMWF forecasts - Real-time rain radar forecast with down-to-the-minute accuracy Stay aware of other vessels - Global AIS from MarineTraffic for industry-leading coverage - Live AIS targets with vessel names, images, Closest Point of Approach (CPA), and more - Easy-to-read vessel icons overlaid directly on the chart True-to-life satellite charts - Dock easily with true-to-life marina layouts - Get a realistic overview to avoid uncharted obstacles - Boat like a local by seeing where other boats have travelled, moored, and anchored Works online and offline - Download charts and view them when boating in areas with no internet access - Stay protected from unforeseen internet outages and connectivity issues - Charts load instantly, without having to wait for your cellular network Upgrade with Orca Core The Orca App can be used as a standalone planning and navigation system. If you are looking for a truly modern navigation system that gives you complete control of your boat and helps you make better decisions, get an Orca Core to unlock a full chartplotter experience on your mobile device. The Core is delivered with a high-precision GPS and compass, giving you a more accurate and reliable boating experience. Connect the Core to your existing NMEA 2000 to view instrument data, AIS targets, and control your autopilot – all from your phone, tablet, and Orca Display. Trusted by the modern boating community Sailors, cruisers, powerboaters - hundreds of thousands trust Orca for a clearer, safer, and more confident experience on the water. Join the modern way of boating. Download Orca today.
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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.