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
Night Mode-Long Exposure Video
let us introduce our latest developed application - night mode-long exposure video.
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
16 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
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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/
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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 Night Mode-Long Exposure Video: 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.
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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
Incorporate more editing tools and filters.
Assumption to check: Limited editing features compared to full video editing apps
Validate with people who use this workflow before building.
Hypothesis 2
Optimize video processing and playback performance.
Assumption to check: Performance issues with high-resolution videos
Validate with people who use this workflow before building.
Hypothesis 3
Implement cloud backup for user videos.
Assumption to check: Lack of cloud storage options for video backup
Validate with people who use this workflow before building.
Hypothesis 4
Provide advanced camera settings for better video capture.
Assumption to check: Limited camera settings and controls
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
let us introduce our latest developed application - night mode-long exposure video. the application takes real pictures and videos at the lowest luminosity without any additional appliances on iphone. captured images post-processing with high quality and super-fast performance filters the application works without any delays and lags. during the photo/video recording you can dynamically change camera sensitivity to achieve the best result as well as set any 1-8x zoom simultaneous to the recoding. the application has own library to organize photos and videos. we have added developed with the professional photographers slow shutter / long exposure mode photo and video capturing functionality, enabling users to shot stunning photos and videos with amazing light trails and motion blur effects. •аmplifier picker •color saturation picker •green amplification mode •fast exposure •front, rear camera •led light •hd photo video mode •focus refresh button •8x zoom •built in library •photo video slider •long exposure mode photo with or without timer •long exposure mode video
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
Expo Camera
React Navigation
React Native Video
Expo Sharing
Zustand
React Native Reanimated
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.
