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
Phone Tracker:IM Map Navigator
With IM Map Navigator, you can locate your friends or family members with your iPhone in real time (GPS Phone Tracking)
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.0
8 ratings · Below Average
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/
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 Phone Tracker:IM Map Navigator: map the core Social Networking 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 real-time location updates and precise tracking features.
Assumption to check: Limited tracking accuracy and functionality
Validate with people who use this workflow before building.
Hypothesis 2
Focus on a modern, user-friendly interface with intuitive navigation.
Assumption to check: Poor user interface and design
Validate with people who use this workflow before building.
Hypothesis 3
Enhance user privacy options and settings for location sharing.
Assumption to check: Inadequate privacy controls
Validate with people who use this workflow before building.
Hypothesis 4
Offer more affordable pricing options and trial periods.
Assumption to check: High subscription costs for premium 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
With IM Map Navigator, you can locate your friends or family members with your iPhone in real time (GPS Phone Tracking). You can also send messages when tracking. features: 1. Location tracking: You can track contacts location on maps in real time and send instance message each other. You can also track multiple users by group track. (Support for satellite view.) 2. Instance Message. 3. Privacy Protection: The locations of anyone using this application are not recorded. Only the people you agreed can see your location. Of course, you can block anyone to get your location anytime. 4. Direction: You can also get directions from where you are to your friend's location. 5. Search Place: Want to meet somewhere nearby with your friend? Just use the Search Place feature for restaurants, theaters, coffee shops, whatever. 6. Place Note: You can create your place notes with location information contain place name, location and photo etc.. 7. Support for Apple Watch: You can track your friends or family members from Apple Watch. 8. Support for iMessage: Find and share nearby places via iMessage. Keeping track of your friends has never been easier. Note: Continued use of GPS running in the background can dramatically decrease battery life.
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
Supabase
react-navigation
react-native-maps
expo-location
BUILD KIT DIFFICULTY
Expert
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.
