App Overview

GEarth Map: Satellite Map GPS icon

GEarth Map: Satellite Map GPS

国辉 满 · Reference

GEarth Map is a satellite map and historical imagery explorer for viewing how places change over time

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
4.6
429 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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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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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 GEarth Map: Satellite Map GPS: map the core Reference 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 caching and optimize map rendering.

Assumption to check: Users find map loading slow or unresponsive

Validate with people who use this workflow before building.

Hypothesis 2

Add offline maps and location data caching.

Assumption to check: Limited offline functionality

Validate with people who use this workflow before building.

Hypothesis 3

Clarify premium features and provide better onboarding.

Assumption to check: In-app purchase confusion

Validate with people who use this workflow before building.

Hypothesis 4

Thorough testing and optimization for various device types.

Assumption to check: Occasional crashes on certain devices

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

GEarth Map is a satellite map and historical imagery explorer for viewing how places change over time. Browse archived world imagery, compare different years, search any location, and turn map changes into shareable videos. Whether you are studying urban growth, coastline changes, construction progress, natural events, or environmental transformation, GEarth Map helps you explore the world through time with an interactive map timeline. Key Features Historical Satellite Imagery View archived map imagery from different years and dates. Explore how cities, roads, coastlines, forests, rivers, and landmarks have changed over time. Interactive Timeline and Time Slider Use the year list and time slider to switch between historical imagery quickly. Drag through time to visually compare map changes in one place. Map Timelapse Playback Tap play to animate historical imagery changes. Adjust playback speed to view long-term development slowly or quickly, making changes easier to understand. Search Any Location Search for cities, addresses, landmarks, or places of interest and jump directly to the map area you want to explore. Street-Level Exploration Long press on the map or search for a location to open street-level views, including Google Street View and Apple Look Around where available. Record and Export Map Changes Create videos from historical map imagery and save them to your photo library. Use exported videos for presentations, research, reports, education, or social sharing. Map Tools Use compass direction, location positioning, map layers, screenshots, and measurement tools to explore places with more context. Use Cases Urban Planning Compare historical satellite imagery to understand city expansion, road construction, land use changes, and development patterns. Academic and Geographic Research Study environmental change, natural events, regional development, and historical landscape transformation. Education Help students visually understand geography, urban growth, climate impact, and how the Earth changes over time. Content Creation and Reports Record map timelapse videos and screenshots for presentations, documentaries, project updates, and visual storytelling. Explore the past. Compare the present. Watch the world change with GEarth Map.

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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
Zustand
Supabase
react-navigation
expo-location
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.