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
Compass Direction - Digital
AS FEATURED ON: TechRadar and more.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
2,576 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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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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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.
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 Compass Direction - Digital: 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 offline caching for compass directions.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Improve location accuracy using additional sensors.
Assumption to check: Inaccurate location in dense areas
Validate with people who use this workflow before building.
Hypothesis 3
Add customization options and additional navigation features.
Assumption to check: Basic design with limited features
Validate with people who use this workflow before building.
Hypothesis 4
Simplify subscription model and provide clearer value proposition for premium features.
Assumption to check: Subscription confusion
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
AS FEATURED ON: TechRadar and more. Compass Direction - Digital is an easy to use compass app which allows you to find accurate compass headings and directions along with a realtime GPS map. Switch between the map and the view by holding the device up! WHY YOU’LL LOVE COMPASS DIRECTION - DIGITAL: The app allows you to use a digital compass - and it looks beautiful whilst doing so! NOTABLE FEATURES: • The app includes heading, direction, altitude, latitude, longitude, speedometer, and a torch • Switch between map types by tapping the screen and pinch to zoom in/out • Switch between the map and view by holding the device up • Accurate realtime compass direction and heading • Realtime GPS coordinates • Simple and beautiful user interface • Small haptics when interacting, improving the overall experience • VoiceOver support • 3D Touch GET IN TOUCH: If you have any questions or feedback, I'm all ears. Compass Direction - Digital was created by an individual in his free time, and I’d love to know what you think. I’m available through Twitter @elohohel. Terms of Use (EULA) - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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
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BUILD KIT DIFFICULTY
Starter
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.
