App Overview

TrailMapper: GPX Routes icon

TrailMapper: GPX Routes

Ziga Porenta · Navigation

Import GPX files, create your own routes, and understand the terrain before you go.

$2.99 · In-app purchases

PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet

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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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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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 TrailMapper: GPX Routes: 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

Provide a simple and intuitive import process with clear instructions.

Assumption to check: Users face difficulty in importing GPX files from various sources.

Validate with people who use this workflow before building.

Hypothesis 2

Incorporate offline maps and caching of GPX routes for better accessibility.

Assumption to check: Limited offline functionality can hinder usability in remote areas.

Validate with people who use this workflow before building.

Hypothesis 3

Optimize map loading speeds with better data handling and caching strategies.

Assumption to check: Users report slow map loading times in rural areas.

Validate with people who use this workflow before building.

Hypothesis 4

Introduce a social aspect where users can share routes and reviews.

Assumption to check: Lack of user-generated content and community features.

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

Import GPX files, create your own routes, and understand the terrain before you go. TrailMapper is a focused route-mapping app for runners, hikers, walkers, travelers, and GPX users who want a clear place to keep and inspect their routes. Plan a new route by tapping waypoints on the map, import GPX tracks from Files, save favorites to your route library, and open them again whenever you need them. TrailMapper shows distance, estimated time, elevation gain and loss, min/max/average elevation, and an interactive route profile so you can understand the path ahead. Key features: - Import GPX and XML route files - Create routes directly on the map - Snap walking routes to roads and paths - Save routes to your personal library - Review distance, estimated time, and elevation stats - Inspect an interactive elevation profile - Follow your current position and heading - Compare your location with the active route - Reverse, edit, rename, delete, export, and share GPX routes - Switch map styles for different planning needs How it works: 1. Import a GPX file or create a new route on the map. 2. Review the route, distance, elevation, and estimated time. 3. Save, follow, export, or edit the route whenever you need it. TrailMapper is built for personal route workflows, not social feeds or crowded trip-planning dashboards. Keep your GPX routes organized, readable, and ready for the next walk, hike, or outdoor day. Download TrailMapper and start mapping your GPX routes.

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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
Expo
Supabase
react-navigation
@react-native-community/geolocation
react-native-fs
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.