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.
App Overview
GeoMark - Pin and Track
GeoMark - Your Personal Location Memory App
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 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 included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
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
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for GeoMark - Pin and Track: 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 a search function for saved locations.
Assumption to check: Difficulty in finding saved locations quickly
Validate with people who use this workflow before building.
Hypothesis 2
Add offline map capabilities for better usability.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize pin colors and icons.
Assumption to check: Lack of customization options for pins
Validate with people who use this workflow before building.
Hypothesis 4
Optimize location tracking for smoother experience.
Assumption to check: Inconsistent performance with real-time tracking
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
GeoMark - Your Personal Location Memory App GeoMark helps you mark, organize, and remember every place that matters to you. Create your personal map of memories with tags, photos, and notes—all stored securely on your device. - KEY FEATURES: **Mark Places on Map** Pin any location on the map and save it with a custom name. Search for places or mark your current location instantly. **Organize with Tags** Create custom tags to categorize your places. Filter locations by tags to quickly find what you're looking for. **Add Photos & Notes** Attach multiple photos and write detailed notes for each place. Build a rich memory archive of your favorite locations. **Share Your Places** Share your marked places with friends via the native iOS share sheet. **PRIVACY FIRST - 100% LOCAL STORAGE** Your privacy is our top priority. All your data—including locations, photos, notes, and tags—is stored exclusively on your device. We never upload, sync, or share your data with any third-party servers or services. Your memories stay private and secure, accessible only to you. - Perfect for: • Travelers documenting their journeys • Food lovers saving favorite restaurants • Adventure seekers tracking exploration spots • Anyone who wants to remember special places Start building your personal map of memories today. Your data, your control, your privacy.
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
react-navigation
@react-native-community/geolocation
axios
react-native-maps
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.
