App Overview

MGRS GPS: Grid & Land Nav icon

MGRS GPS: Grid & Land Nav

Dajiale · Navigation

MGRS GPS turns your iPhone into a fast, glanceable military grid reference readout — built for soldiers, search-and-rescue teams, hunters, hikers, orienteers, and field researchers who think in grids and often work wi...

$12.99 · In-app purchases

PRICE
$12.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
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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.

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What's included17 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.

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.

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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> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for MGRS GPS: Grid & Land Nav: 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

Offer robust offline maps and navigation.

Assumption to check: Limited offline functionality

Validate with people who use this workflow before building.

Hypothesis 2

Simplify search and display of MGRS coordinates.

Assumption to check: Complexity in finding specific grid coordinates

Validate with people who use this workflow before building.

Hypothesis 3

Build a community feature for users to share experiences.

Assumption to check: Lack of user reviews and community support

Validate with people who use this workflow before building.

Hypothesis 4

Introduce a free trial or tiered subscription model.

Assumption to check: High initial cost for users

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

MGRS GPS turns your iPhone into a fast, glanceable military grid reference readout — built for soldiers, search-and-rescue teams, hunters, hikers, orienteers, and field researchers who think in grids and often work without a signal. Your position is shown as a large, high-contrast MGRS grid you can read at arm's length and copy with one tap. Mark waypoints, organize them into color-coded overlays, navigate with a clear bearing-and-distance display, record breadcrumb tracks, and keep working when the cell signal drops. POSITION, ANY FORMAT • MGRS / USNG military grid reference • UTM / UPS • Latitude / Longitude (decimal, DDM, DMS) • OSGB British National Grid • Show up to three formats at once • Each extra coordinate format can now be shown in its own datum MAKE IT YOURS • Choose the typeface and color of the grid readout and every data tile • Six style packs, from instrument green to a true 14-segment amber LCD • Style one tile on its own, or hand the whole screen to the readout ONE-TAP SHARING • Tap any readout to copy your grid instantly • Share via the system share sheet • Send a waypoint as a QR code WAYPOINTS & OVERLAYS • Mark your current location, a map point, or type a grid • Group waypoints into toggleable, color-coded overlays • Draw lines and polygons for routes, sectors, and boundaries • Plan multi-point routes with per-leg distance and bearing • Projected waypoints — create a point from a range and bearing off any origin • Military symbols for friendly, hostile, neutral, and unknown units MAP WITH A REAL GRID • Smooth, labeled MGRS / UTM grid overlay • Measure ruler reads distance in degrees AND mils • Range rings around your position, the map centre, or any waypoint • Area shapes — place a square, rectangle, or circle from a centre point and a size • Night vision — the whole app turns red, map included, with a one-tap switch on the Map screen NAVIGATE • Big bearing arrow, distance, cross-track, and ETA • True, magnetic, or grid north reference • Offline magnetic declination from an embedded World Magnetic Model (WMM2025) • Arrival alert with haptic feedback WORKS OFFLINE • Built-in USGS topographic, imagery, and shaded-relief basemaps • Download map areas for offline use — frame a box, pick the detail level, and see the tile count and size before it starts • Offline Maps manager: rename, delete, and see what each area costs on disk • Import your own offline maps (MBTiles raster) • Add your own tile server for coverage outside the US • Core navigation works with no cell signal TRACK RECORDING • Record breadcrumb tracks with distance, elevation gain, and time • Export tracks as GPX IMPORT & EXPORT • Full GPX import / export (waypoints + tracks) • KML and CSV import / export APPLE WATCH • Glance at your grid and bearing on your wrist PRIVATE BY DESIGN • No ads • No subscriptions • No accounts, no cloud sign-in • No analytics SDKs or third-party trackers • Your data stays on your device MGRS GPS is a one-time purchase — every feature is included. No subscriptions, no in-app purchases, and no ads, ever. Not certified for aviation, marine, surveying, live-fire, or military operations. Always carry a backup means of navigation.

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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.

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BUILD KIT DIFFICULTY
Intermediate

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.