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
Digi Compass
Digi Compass with Speedometer – Smart Location Tool
$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/
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 Digi Compass: 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 calibration feature to allow users to manually adjust the compass.
Assumption to check: Compass accuracy can be affected by magnetic interference.
Validate with people who use this workflow before building.
Hypothesis 2
Integrate additional navigation functionalities like route planning.
Assumption to check: Limited map features compared to dedicated navigation apps.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to download maps for offline access.
Assumption to check: No offline functionality available.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance UI design with modern aesthetics and animations.
Assumption to check: User interface may not be visually appealing.
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
Digi Compass with Speedometer – Smart Location Tool Stay on the right path with Compass & Speedometer, your all-in-one navigation companion! Whether you're exploring the great outdoors, driving through new cities, or just finding your bearings, this app provides precise heading, real-time speed, and detailed location information. * Track your speed in km/h & View your exact location & city * Accurate magnetic compass readings * Fast, simple, and beautifully designed Key Features: Magnetic Compass: Instantly view your current heading in degrees using the device’s magnetometer. GPS Speedometer: Track your speed accurately in km/h using advanced GPS data. Live Location: See your current coordinates (latitude & longitude) and get live location names with reverse geocoding. Sub-locality Detection: Go beyond city names — get the specific neighborhood or area you're in. Auto Calibration: Supports heading calibration for the most accurate compass readings. Smooth User Experience: Powered by CoreLocation and Combine for real-time, reactive updates. High performance and modern architecture. Perfect For: Hikers, trekkers, bikers, and drivers Urban explorers and travelers Anyone needing a simple yet powerful navigation tool
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
expo-location
react-native-reanimated
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.
