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
Satellite Map Offline Download
Discover the ultimate navigation app with three map modes: satellite, topographic, and standard
$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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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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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 Satellite Map Offline Download: 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
Offer customizable map layers and styles.
Assumption to check: Limited map options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Enable users to share downloaded maps with friends.
Assumption to check: No offline map sharing feature
Validate with people who use this workflow before building.
Hypothesis 3
Implement progress indicators and success notifications.
Assumption to check: Lack of user feedback on map downloads
Validate with people who use this workflow before building.
Hypothesis 4
Add search features to quickly find downloaded maps.
Assumption to check: No search functionality for downloaded maps
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
Discover the ultimate navigation app with three map modes: satellite, topographic, and standard. With our app, you can easily explore the world, find any location, and download specific areas for offline use. - Three map modes: Switch between satellite, topographic, and standard views for maximum convenience and accuracy. - Offline access: Download the map areas you need by simply tapping on squares, and use them without an internet connection. - High-quality images: Clear and detailed maps help you navigate with ease. - User-friendly interface: A simple and intuitive design that allows you to quickly find locations and manage your maps. Perfect for travelers, adventurers, hunters, and anyone who loves exploring the world! Download maps in advance and feel confident that you won’t get lost, even in the most remote places on the planet. Subscription Details: • Payment will be charged to the iTunes account at confirmation of purchase. • Subscription is automatically renewed unless auto-renew is turned off at least 24 hours before the end of the current period. • Account will be charged for renewal within 24-hours prior to the end of the current period. • Subscription can be managed and auto-renewal turned off in the user's account settings. • User Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • Privacy policy: http://www.alfarays.com/privacy_en.htm
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
Zustand
axios
react-navigation
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.
