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
Chooser!
Randomly select a finger among the fingers placed on the screen! Great for board games, card games, parties, and every "who goes first?" moment.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
38,912 ratings · Top 15%
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 Chooser!: 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
Implement a sorting or filtering feature for easier navigation.
Assumption to check: Users find it hard to manage long lists of options
Validate with people who use this workflow before building.
Hypothesis 2
Expand sharing functionality to include more platforms and formats.
Assumption to check: Limited sharing options
Validate with people who use this workflow before building.
Hypothesis 3
Enhance history screen with better organization and categorization of past choices.
Assumption to check: Confusing history management
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize themes or layouts to enhance personalization.
Assumption to check: No customization for the user experience
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 select a finger among the fingers placed on the screen! Great for board games, card games, parties, and every "who goes first?" moment. THE ORIGINAL FINGER CHOOSER • Everyone places a finger on the screen — Chooser picks the winner • Multiple winners, ranked results, or split everyone into teams • Tap Style: everyone taps once to join, then let fate decide PLAY ONLINE WITH FRIENDS • Create a room and share the code, or match with random players • Truth or Dare and dare challenges built for playing together from anywhere • Win a dare? Record a video of it and the whole room watches together • No rooms open? Jump into a quick round against AI • Room chat, custom names and colors, and a live shared finger canvas TRUTH OR DARE & PARTY GAMES • Thousands of truths, dares, and challenges across 10+ categories • Rate cards with a thumbs-up or down — Chooser learns what you love • Fresh content added all the time, no update needed MORE WAYS TO DECIDE • Spin the customizable roulette wheel • Flip a coin, roll 3D dice, pick a number, or spin the arrow • Available in 55 languages Privacy Policy: https://visionarystudio.app/privacy-policy/ Terms of Use: https://visionarystudio.app/term-of-use/
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
react-navigation
expo-sharing
react-native-async-storage
TypeScript
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.
