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.
Arrow GPS is a powerful offline GPS navigation app built for reliability in extreme environments
$8.99 · 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 Arrow GPS Offline: 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: Dependence on internet for maps and navigation updates
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficult to find nearby services like gas stations or restaurants
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor user feedback for route recalculations
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited customization options for user preferences
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.
Arrow GPS is a powerful offline GPS navigation app built for reliability in extreme environments. Designed for desert driving, camping, and outdoor exploration, it ensures you always know where you are and where to go — even with zero network coverage. Using your device’s GPS, Arrow GPS provides precise positioning and a clear directional arrow that points directly toward your destination. No loading maps, no signal required, no distractions. Whether you are navigating deserts, mountains, or remote areas, Arrow GPS delivers accuracy, speed, and simplicity in every journey. --- Core Experience • Navigate without internet using pure GPS • Clear directional arrow pointing to your target • Real-time and accurate location tracking • Reach your destination with confidence --- Advanced Features • High-accuracy GPS positioning • Digital compass for precise direction • Speedometer and altitude tracking • Distance calculator and trip counter • Route tracking and trip planning • Voice alert on arrival • Satellite signal strength and count • Accuracy up to 1 meter --- Smart Tools • Offline map support • Nearby places finder • Weather information • Sun and moon tracking • World clock • Qibla direction and prayer times --- Location Management • Save unlimited locations • Quickly return to saved places • Share your live location • Copy and manage coordinates easily • Support multiple formats (Decimal, DMS) • Convert coordinates between systems • Import and export GPX, KML, KMZ, LOC files • Backup and restore saved locations --- Built for Real Use • Offline navigation in deserts and remote areas • Off-road driving and overlanding • Camping and outdoor trips • Find your parked car or campsite • Explore areas without network coverage • Reliable navigation in harsh environments --- Why Arrow GPS Most navigation apps stop working when the signal is lost. Arrow GPS is built to keep working. Fast, accurate, and reliable — it is the essential navigation tool for anyone who depends on GPS in real-world conditions.
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.