App Overview

Handy GPS icon

Handy GPS

Anthony Dunk · Navigation

The perfect companion for your next outdoor adventure

$9.99 · In-app purchases

PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.9
10 ratings · Top 5%

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 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.

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 Handy GPS: 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

Implement full offline map capabilities and user-friendly waypoint management.

Assumption to check: Limited offline functionality compared to competitors

Validate with people who use this workflow before building.

Hypothesis 2

Simplify the purchase flow and provide clear descriptions of features.

Assumption to check: In-app purchase process can be confusing

Validate with people who use this workflow before building.

Hypothesis 3

Integrate voice navigation for a hands-free experience.

Assumption to check: Lack of voice navigation

Validate with people who use this workflow before building.

Hypothesis 4

Enhance the support section and offer multiple contact methods.

Assumption to check: Insufficient user support options

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

The perfect companion for your next outdoor adventure. Seek, find, record and return home with Handy GPS. This app is a real navigation tool designed for outdoors sports like hiking, bushwalking, mountain biking, kayaking and trail riding. It allows you to work in UTM or lat/lon coordinates. Features: * View your current location in UTM or Lat/Lon formats. * Record and/or manually enter waypoints in UTM, Lat/Lon, or MGRS. * Goto a waypoint, with optional audio proximity alarm and spoken directions. * Record a track log. * Show your current location, waypoints and tracklogs on a map. * Export waypoints and tracklogs to a KML file for viewing in Google Earth, or to a GPX file. * Export waypoints to a comma delimited (CSV) text file. * Import KML or GPX files and view in the app. * Email your current location to a friend. * Odometer to keep track of how far you've gone. * Magnetic compass. * Elevation profile. * Compute sun and moon rise and set times. * Supports both metric and US/imperial units. * Supports datums WGS84, GDA94, AGD66 and AGD84. (Use WGS84 for NAD83) * Allows entry of parameters for a custom datum (e.g. ED50, SAD69, OSGB36, GDA2020 etc), as well as supporting affine parameters for local grid systems. * Can display your location a normal grid ref, an MGRS grid ref (WGS84 datum only), or as a UK Ordinance Survey (OS) grid ref. * Can download offline map tiles for use where there is no cellular coverage. * Can import pre-prepared state or country-level base maps from a zip file. * Optional walk timer. * Email your current waypoints and tracklogs as a KML file. * Take photos from within the app to be stored with the current session. Disclaimer: Continued use of GPS running in the background can dramatically decrease battery life. To save battery power you can close the app from the task manager. The developer accepts no responsibility for you getting lost while using this app.

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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 Navigation
Expo Location
Zustand
React Native Maps
Async Storage
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.