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
MapOut
“MapOut saves the day with its intuitive interface for drawing routes and viewing elevation profiles
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.9
142 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 included18 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.
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 MapOut: 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
Enhance offline map capabilities with more detailed regions.
Assumption to check: Limited offline functionality compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Simplify subscription tiers and clearly highlight benefits.
Assumption to check: In-app purchase options can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Streamline layout and improve UX with clearer navigation.
Assumption to check: User interface can feel cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Add integrations for CarPlay and third-party apps for better functionality.
Assumption to check: No integration with other apps or services
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
“MapOut saves the day with its intuitive interface for drawing routes and viewing elevation profiles. I’m genuinely impressed by its powerful features!” – Alee, cyclingabout.com Offline maps covering the entire globe, optimized for iPhone and iPad. As beautiful as a traditional paper map—but far more versatile. Perfectly tailored for: - Hikers: Clear, detailed terrain maps accessible even in the most remote locations, without an internet connection. - Cyclists: Extensive cycling route network with real-time speed and distance tracking. - City Travelers: Detailed city maps complete with essential tourist information. - Map Enthusiasts: Simply elegant maps that are a pleasure to view. Innovative 3D Tilt View - Tilt your device in any direction to vividly explore terrain details. Learn more at [mapout.app](https://mapout.app). Powerful Offline Search - Easily find places, streets, mountains, and more—no internet needed. High-Quality Map Data - Built upon the OpenStreetMap project, the "Wikipedia of Maps". Contribute your own corrections and additions at OpenStreetMap.org. - Regularly updated offline maps available for your selected regions. Effortless Tour Planning - Draw: Easily create custom routes and waypoints directly on your map. Adjust existing tours or imported GPX files effortlessly. - Import: Transfer routes to your device via email using a free "MapOut.me" account. Discover countless GPX and KML route files online, ideal for hiking or biking (e.g., gpsies.com). - Record: Capture your adventures and easily share them with friends. - Insights: Quickly see vital information for every tour—distance, elevation changes, route profile, and map details. Superior Map Viewing Experience - Rapid, hardware-accelerated rendering for smooth navigation. - Continuous zoom with impeccable clarity at every level. - Detailed topographical views featuring contour lines and shading. - Versatile overlays include biking, hiking, skiing routes, sightseeing locations, and public transport networks. Find comprehensive support and answers in our user manual: https://mapout.app/manual Map data © OpenStreetMap contributors https://www.openstreetmap.org/copyright
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
axios
react-native-maps
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.
