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
PhotoRoulette - Party Photos
Randomly pick a photo from your album with a fun animation!
$1.99
PRICE
$1.99
No 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 included15 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 PhotoRoulette - Party Photos: map the core Entertainment 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
Implement a streamlined sharing feature with quick access buttons.
Assumption to check: Users find it difficult to discover and share photos quickly.
Validate with people who use this workflow before building.
Hypothesis 2
Introduce game-like elements to enhance user interaction.
Assumption to check: Limited user engagement due to lack of interactive features.
Validate with people who use this workflow before building.
Hypothesis 3
Create a more intuitive category filtering system.
Assumption to check: Difficulties in browsing through categories of photos.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize image loading and caching strategies for faster access.
Assumption to check: Users report slow loading times for photos.
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
Randomly pick a photo from your album with a fun animation! Perfect for parties, drinking parties, and group events. You can also set missions for the selected person. [How to Use] ■ Settings Choose the album to use from your photo library (all photos are used by default). Set missions that the selected person must complete. ■ Shuffle Press the start button — a random photo is selected from your album. Share the result with friends using the share button. [Features] ■ Five Animation Modes - Slideshow: Photos flash rapidly before landing on the winner - Roulette: A spinning wheel with your photos as segments - Slot Machine: Three reels spin and stop one by one to reveal the winner - Grid: All photos displayed at once — a highlight narrows down to the winner - Card Flip: Tap a face-down card to reveal the winner ■ Confetti Effect Colorful confetti bursts onto the screen the moment a winner is selected. ■ Stop Type - Auto: Stops automatically after a set time - Manual: You control when to stop ■ Missions Assign tasks to the selected person after each shuffle. ■ Added Photo Boost Boost the winning probability of photos you added via camera or library — up to 5x. ■ Sound Effects Choose from multiple sound effect types to play during and after the shuffle. ■ Themes Switch between four visual themes. ■ Overlay Text Display custom text on top of the result photo. ■ Show Count Set the maximum number of times the same photo can be selected. ■ Add Photos Use the camera button to take a new photo or select from your photo library to add directly to the roulette. ■ Excluded Photos Exclude any photo you don't want to appear. Excluded photos are skipped in future shuffles and can be restored anytime.
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
Supabase
React Navigation
@react-native-image-picker
Zustand
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.
