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 Detector Camera
Motion Detector Camera is a camera surveillance app, that uses the built-in camera to detect movements in the surrounding area using an advanced motion detection algorithm
$3.99 · In-app purchases
PRICE
$3.99
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'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 Motion Detector Camera: map the core Utilities 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
Integrate advanced features like notifications and remote monitoring.
Assumption to check: Limited functionality compared to full security systems
Validate with people who use this workflow before building.
Hypothesis 2
Optimize camera usage to reduce power drain.
Assumption to check: High battery consumption during usage
Validate with people who use this workflow before building.
Hypothesis 3
Provide clear feedback on sensitivity adjustments and motion detection status.
Assumption to check: Difficulty in adjusting sensitivity levels
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
Motion Detector Camera is a camera surveillance app, that uses the built-in camera to detect movements in the surrounding area using an advanced motion detection algorithm. If it detects movement, it can sound beep to notify you. When the motion detection camera detects changes, it starts recording automatically. It will detect any moving object within camera view. This app enables you to use your iDevice as a remote surveillance camera with motion detection functionality. Features: - Support both front/back camera. - Support both portrait/landscape mode. - Camera pinch to zoom specific area. - Video/Image size range from 4k[supported device only]/fHD or HD - Switch between video or photo mode. - Detect Human, Cat or Dog. - Option to dime screen while recording. - Icon indicator while recording/photo capture. - Option to sound beep when motion detected. - Option to select difference sound tone for motion detection. - Surveillance images/videos are saved in the photo library for fast and easy access. - All images/videos are stored inside camera roll / Motion Detecter album. - Image capture with date, time, plus object type icon embed. - Video name with date, time and object type. E.g. 20200815-0530PM-dog.mp4 Tips: - Specific object you want to detect, select cat if you need to detect cat only. All other objects will be ignored. - Use dime screen option for battery saver. - Tap on the dime screen icon to dime screen. To wake up the screen just tap on the screen again. - Pinch to zoom to a specific area for monitoring. - Use small video/image size for smaller storage/energy footprint. - When in photo capture mode, images are captured for every 3 second interval. - In video capture mode, video capturing start once object is detected, video capturing stop when object is missing from the camera view. Usage: - Pet Monitor, see what your dog and cat are doing while you are busy. - Help secure homes and detects someone is in your home when they shouldn't be. - Anything else you can imagine. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
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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
React Navigation
Expo Camera
Zustand
Expo Sharing
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.
