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.
WreckMap is the world's most comprehensive shipwreck reference app for iOS
$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.
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 WreckMap: map the core Reference 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-generated content
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Poor navigation experience
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of community features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inadequate offline 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.
WreckMap is the world's most comprehensive shipwreck reference app for iOS. Search and explore over 131,000 shipwrecks globally, drawn from four authoritative sources including NOAA, the UK Hydrographic Office, EMODnet, and Ireland's National Monuments Service. No subscriptions. No in-app purchases. No ads. One-time purchase. Built for scuba divers, recreational fishermen, maritime historians, and wreck enthusiasts. FEATURES: MAP & EXPLORATION - 131,000+ wrecks worldwide on a single interactive map - Global density heatmap shows wreck concentrations at a glance - Color-coded pins: Military (red), Commercial (blue), Passenger (green), Sailing/Other (orange) - Filter map by wreck category with one tap - Search any wreck by name — fly to it instantly - Enter GPS coordinates to navigate directly to any location - Map remembers your last position between sessions NEAR ME - Find the 3 closest wrecks to your location automatically - Satellite view with route lines from your position to each wreck - Live compass pointing toward nearby wrecks with bearing and distance - Crosshair reticle for precise wreck location on satellite imagery BROWSE & SEARCH - Browse by sea region, vessel type, cause of loss, or era - Sort results by name, depth, date of loss, or distance from you - Filter to your current map area or search the entire database - Each category shows wreck counts WRECK DETAILS - Complete wreck data: name, coordinates, depth, vessel type, tonnage, date and cause of loss - Distance and compass bearing from your location - Copy coordinates in your preferred format (DD, DDM, or DMS) - Position accuracy indicator (exact, approximate, estimated) EXPORT & SHARE - Export coordinates as GPX files for chart plotters (Garmin, Raymarine, Navionics) - Batch export up to 200 wrecks as GPX from any map area - Share beautiful wreck cards with map snapshot and Apple Maps link - Print formatted wreck summaries - Export favorites and dive logs as CSV or PDF PERSONAL DIVE LOG - Log dives with date, max depth, visibility, water temperature, current conditions, and notes - 5-star rating system - Edit or delete entries anytime - Multiple dives per wreck - Export your complete dive history FAVORITES - Bookmark any wreck for quick access - Swipe to remove - Export your favorites list as CSV, PDF, or GPX WORKS OFFLINE - All 131,000+ wrecks stored on your device — no internet required for searching, browsing, or exporting - GPS compass and Near Me features work without cell signal - Download Apple Offline Maps for full map coverage at sea DATA SOURCES - NOAA Wrecks and Obstructions (US waters — ~21,000 wrecks) - UKHO Admiralty Wreck Database (Global — ~102,000 wrecks) - EMODnet Human Activities (European waters — ~6,000 wrecks) - Irish Wreck Inventory / WIID (~2,500 wrecks) Coordinates are for reference only and should not be used for navigation.
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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.