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
Spin The Wheel - Random Picker
Having a hard time deciding something? Let us help you decide in a fun way!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
89,763 ratings · Top 5%
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 Spin The Wheel - Random Picker: 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
Allow users to choose colors and styles for the wheel segments
Assumption to check: Limited customization for the wheel design
Validate with people who use this workflow before building.
Hypothesis 2
Implement a feature to save and show past results
Assumption to check: No history of past spins
Validate with people who use this workflow before building.
Hypothesis 3
Integrate sharing features to let users share their spins with friends
Assumption to check: Lack of social sharing options
Validate with people who use this workflow before building.
Hypothesis 4
Offer an ad-free experience through in-app purchases
Assumption to check: Ads can disrupt 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
Having a hard time deciding something? Let us help you decide in a fun way! Spin The Wheel - Random Picker is an ultimate decision making fortune wheel app where you can create countless custom wheels of fortune, add as many customized labels as you want and spin away! Put anything you want on the wheel and make unique raffle pickers, random name pickers to draw names of prize winners, create your own spinner games which are much more fun than just flipping a coin or make unlimited lucky wheels to help you answer such questions as What should I do? Where should I eat? Where should I go? Make your decisions in a fun way! Some of the many great features you get for free: > Chatrooms! Chat with other people who are currently spinning the same wheel of fortune as you and see their spin results. > Premade presets to easily create beautiful spinner wheels > A wheel store with hundreds of user-made wheels > Unlimited wheels of fortune > Unlimited labels on every wheel > Customizable text and background of each label, choosing from dozens of colors > Easily share your wheels and spin results with friends > Quickly disable and re-enable wheel labels as needed > Random result every time, no matter how hard the wheel was spun If you want to have fun doing your raffle, giveaway or picking random name for a game then this app is exactly what you want to have! In the Spin The Wheel - Random Picker the result is mathematically calculated and chosen randomly every time you spin the wheel, no matter how hard or easy the wheel was spun.
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
Zustand
react-navigation
expo-animated
react-native-share
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.
