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
Ray.Radar Detector Pro
Ray.Radardetector Pro is a versatile app for drivers that warns them of road hazards, helps them obey traffic rules and saves them money on fines!
$24.99 · In-app purchases
PRICE
$24.99
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.
Build your own version
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 Ray.Radar Detector Pro: 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 a free trial and clearly list features that justify the cost.
Assumption to check: High subscription price without clear value proposition
Validate with people who use this workflow before building.
Hypothesis 2
Incorporate user-generated alerts and community sharing.
Assumption to check: Limited user engagement features
Validate with people who use this workflow before building.
Hypothesis 3
Implement machine learning to filter alerts based on user data.
Assumption to check: Potential for false alerts
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize alert types and notifications.
Assumption to check: Lack of customization options
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
Ray.Radardetector Pro is a versatile app for drivers that warns them of road hazards, helps them obey traffic rules and saves them money on fines! Main functions of the app: - Visual and audible warnings of speed cameras and other types of radars - Warning of paired cameras measuring average speed in the area - Running in the background with your navigation device or map - Built-in dash cam If your speed when approaching a danger zone is higher than the permitted limit, the app issues warning signals. You can select the speed threshold in the app settings. Download the app now and save on fines and points today! Ray.Radardetector can work in the background - use it together with your navigator, maps or any other application. No permanent internet connection is required during the journey. The app works offline, the internet is only needed to update the cameras database before travelling. The app is available in English, German, French, Spanish and Russian in Europe. The app currently contains an up-to-date radar map for the UK, Germany, France and other European countries. Service Conditions Privacy Policy If you have any questions, please do not hesitate to contact us - Leave your requests, comments, information about missing cameras. --- Please note! - Using the app in the background can shorten your battery life. Remember to shut down the app when you do not need it. - Ray.Radardetector Pro does not guarantee no fines, as new cameras and hazards may not appear in the database immediately. Please be careful and always obey the traffic rules, which the app will help you do!
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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
Mapbox
Axios
React Navigation
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.
