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
Car Camera DVR. PRO
Turn your iPhone or iPod touch into a full featured Car DVR recorder at a fraction of the cost of the standalone device
$12.99 · In-app purchases
PRICE
$12.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
282 ratings · Top 30%
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 included17 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 Car Camera DVR. 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 expanded cloud storage options in subscription tiers.
Assumption to check: Limited cloud storage for recordings
Validate with people who use this workflow before building.
Hypothesis 2
Implement auto-trim features and better file management in settings.
Assumption to check: Difficulty managing large video files
Validate with people who use this workflow before building.
Hypothesis 3
Add sharing capabilities to social media or cloud services.
Assumption to check: Lack of integration with other apps
Validate with people who use this workflow before building.
Hypothesis 4
Provide clearer options for video quality and auto-adjust features.
Assumption to check: Inconsistent video quality settings
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
Turn your iPhone or iPod touch into a full featured Car DVR recorder at a fraction of the cost of the standalone device. Whenever you commute to work, go on a road trip or race on a race track, car camera is your ideal companion. Record HD definition videos while driving with embedded data about time, location and speed. Export recorded videos to use as an evidence in case of ticket or accident or just to share with your friends if you caught something interesting on tape. Car camera is the only app in App Store that is capable of recording high quality HD driving videos with data overlay. Features: Record videos with resolutions 640х480, 1280х720, 1920х1080, 4K and up to 60 FPS Embed data overlay into videos: current time, speed, coordinates, heading Record audio Metric and English units Continuous loop recording. Older videos are overridden by newer ones to preserve space on the device Store recorded videos within the application Video Playback within the application or with AirPlay enabled devices Export Videos to the gallery Privacy Policy: http://appannex.com/privacy-policy/ Terms of Use: 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
React Native
Expo
expo-camera
expo-av
react-navigation
zustand
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.
