App Overview

GPS Coordinate Converter icon

GPS Coordinate Converter

Aviation Mobile Apps, LLC. · Navigation

GPS Coordinate Converter is an advanced, yet simple to use mobile application designed for converting geographic coordinate formats, and for measuring distance and bearing between coordinates

$8.99 · In-app purchases

PRICE
$8.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.6
12 ratings · Top 15%

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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Build Kit

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A product spec, screen plans, and build steps for your coding agent.

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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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Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

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

// RORK SYSTEM PROMPT
Rork plan preview for GPS Coordinate Converter: 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

Expand to include more formats and features.

Assumption to check: Limited formats for coordinate conversion

Validate with people who use this workflow before building.

Hypothesis 2

Add a favorites feature for saved coordinates.

Assumption to check: No option to save frequently used coordinates

Validate with people who use this workflow before building.

Hypothesis 3

Simplify the design and improve onboarding.

Assumption to check: User interface can be confusing

Validate with people who use this workflow before building.

Hypothesis 4

Introduce a freemium model with a trial period.

Assumption to check: High price point with no free trial

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

GPS Coordinate Converter is an advanced, yet simple to use mobile application designed for converting geographic coordinate formats, and for measuring distance and bearing between coordinates. Convert ===================== Easily and quickly convert between coordinate formats including decimal degrees, degrees-minutes-seconds, degrees and decimal minutes, UTM, MGRS, ARINC 424, and FMS style coordinates. Measure ===================== The app measures distance and bearing between two coordinates by placing them on a map and tracing a line that follows the curvature of the Earth between them. The distance and bearing information are displayed below the map in Nautical Miles, Nautical Miles UK, Kilometers and Statute Miles. Time zone and postal address are also shown when an internet connection is available. Onboard database ===================== Included is a built-in database useful for finding the coordinate of an airport, heliport, and radio navigation aids, including VOR, VORTAC, NDB, and DME. Bookmarks ===================== Save and recall frequently used coordinates. Specialized Keyboard ===================== We added a new on-screen keyboard built specifically for working with geographic coordinates. This new keyboard will guide and help you avoid common data entry mistakes. Yes, copy and paste works too, and we'll validate and adjust what you paste accordingly. We think you are going to love this new keyboard. It makes it easy to do the right thing, and hard to do the wrong thing. .

Written user reviews are not shown here. Check current App Store reviews >

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
Expo
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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.