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
Motion Sensor
This app is a motion detector that records video automatically when it detects movement
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
257 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included16 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.
JavaScript is required to complete mailbox verification.
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 Motion Sensor: map the core Photo & Video workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Add advanced editing tools like AI-based enhancements and batch editing.
Assumption to check: Limited editing features compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Offer more flexible pricing plans and a broader free trial.
Assumption to check: High subscription cost for premium features.
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate social media sharing directly from the app.
Assumption to check: Lack of social sharing options.
Validate with people who use this workflow before building.
Hypothesis 4
Implement thorough testing and user feedback loops to improve stability.
Assumption to check: Occasional bugs in video playback.
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
This app is a motion detector that records video automatically when it detects movement. Perfect for surveillance, motion detection, security, pranks, or just recording what your pet does when you are not home. Features ▸ Dropbox™ - Sends your videos to your Dropbox™. ▸ iCloud Drive - Sends your videos to your iCloud Drive. ▸ Resolution - 4K¹, 1080p¹, 720p or 480p. ▸ Frame Rate - 30, 60¹, 120¹ or 240¹ frames per second. ▸ Detection Zone - Defines the portion of the camera that the motion detection algorithm uses. ▸ Schedule - Defines start and end times for the motion detection. ▸ Gallery - View videos directly in the app. ▸ Time Stamp - Adds the date and time to your videos. ▸ Camera Control - Select between front or rear camera. ▸ Sensitivity - Controls the motion detection sensitivity. ▸ Idle Record - Controls how long the app continues recording after the motion stops. ▸ Visualize Motion - Visualizes motion detected by the app. ▸ Alarm - Plays an alarm sound when motion is detected. ▸ Door Bell - Plays a bell sound when motion is detected. ▸ Light - Toggles the flashlight when using the rear-facing camera. ▸ Rick Roll - Surprise your friends with Rick Roll when you catch them on camera. ▸ Auto Focus - Option to turn off autofocus to avoid re-focusing of the camera during motion detection. ¹ Dependent upon device's capabilities.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
FastAPI
Redux
expo-camera
@react-native-community/slider
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.
