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.
App Overview
MilGPS PRO
MilGPS PRO — Professional Military GPS Navigation
$9.99 · In-app purchases
PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.0
2 ratings · Below Average
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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for MilGPS PRO: 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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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Efficient offline maps with small download size
Assumption to check: Uses too much data
Validate with people who use this workflow before building.
Hypothesis 2
Clear lane guidance and landmark references
Assumption to check: Voice directions unclear
Validate with people who use this workflow before building.
Hypothesis 3
Instant rerouting with traffic updates
Assumption to check: Slow route recalculation
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
MilGPS PRO — Professional Military GPS Navigation MilGPS PRO is a professional-grade military GPS navigation app that puts everything you need in the field into a single application. Built for terrain, operations, and navigation. LOCATION & COORDINATE SYSTEMS - MGRS (Military Grid Reference System) — full 10-digit precision - UTM coordinate system - USNG (US National Grid) - QTH Locator - Decimal and DMS LAT/LON formats - One-tap format switching - Instant coordinate copy ADVANCED MAP SYSTEM - 6 map layers: Satellite, Topographic, Road, Hybrid, Terrain, Bing Satellite - Military grid line overlay - Hillshade relief, contour lines, and road name overlays - Layer transparency control - Map search by coordinate (MGRS, LAT/LON, DMS) - Offline map download and caching - 3D terrain view TARGET MANAGEMENT - Unlimited waypoint storage - Long-press on map to instantly add a target - Manual MGRS coordinate entry - Import from GPX, KML, KMZ, CSV, and MGRS list - Move, rename, and delete targets - Export all targets as GPX - Deep link target sharing - Distance and bearing to target COMPASS & NAVIGATION - Real-time digital military compass - Absolute and relative bearing display - Target bearing indicator - Route deviation warning - ETA (estimated time of arrival) calculation - Radar sweep compass display ROUTE & MISSION MODE - Draw routes directly on the map - Multi-point route planning - Save and load routes - GPX route import/export - Mission mode: active navigation with route tracking - Route deviation indicator - Total distance calculation TRACK RECORDING - Automatic track recording - Stop and pause support - Live speed, max speed, average speed - Total ascent and descent calculation - Max/min altitude tracking - View saved tracks on the map - Export tracks as GPX SENSORS & LIVE DATA - GPS accuracy indicator - Altitude and terrain type (Flat / Hill / Mountain / High Altitude) - Barometer and atmospheric pressure - Live speed (km/h and mph) - Local time and Zulu (UTC) DTG display - Metric / Imperial unit toggle TOOLS - Coordinate converter (LAT/LON to MGRS/UTM) - Area calculation - Distance measurer - Offline map downloader (Regional / District / Neighborhood zoom levels) RELIABILITY & PERFORMANCE - Full offline operation without internet connection - Offline use with cached maps - Background location tracking - Optimized for low battery consumption - All data stored on-device, privacy first WHO IS IT FOR? - Military personnel and security professionals - Search and rescue teams - Mountaineers and trekking enthusiasts - Orienteering athletes - Hunters and off-road drivers - Map and navigation enthusiasts Know your position at all times. Reach your objective in any condition. LANGUAGE SUPPORT With this update, MilGPS PRO is fully available in 21 languages. You can switch languages instantly from the sidebar menu within the app. Supported languages: Turkish, English, German, French, Spanish, Italian, Portuguese, Russian, Arabic, Chinese (Simplified), Japanese, Korean, Hindi, Bengali, Indonesian, Dutch, Polish, Swedish, Ukrainian, Vietnamese, Persian.
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Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Mapbox
Expo Location
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BUILD KIT DIFFICULTY
Advanced
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.
