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
PlayOS
PlayOS — It Pays To Play®
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 4.1
3,344 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.
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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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 PlayOS: map the core Sports workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
PlayOS — It Pays To Play® Compete in skill-based competitions across your favorite games, climb leaderboards, and earn rewards and real money where eligible. COMPETE YOUR WAY Play Quick Rounds for fast, on-demand 1v1 matches. Enter bracketed tournaments for bigger prize pools. Challenge friends and rivals directly. Earn PlayPoints on every match. PLAYPASS IS COMING Unlimited tournament access. Signature tournaments hosted by pro athletes. Priority support. Join the waitlist and unlock 50% off your first month. BUILT FOR COMPETITORS PlayOS is skill-based competition for 18+ gamers. Secure deposits and withdrawals with bulletproof match resolution. Download. Compete. Get paid. Disclaimer: PlayOS complies with applicable state and federal gaming laws. Pay-to-enter competitions are available only in select U.S. states and are subject to location, verification, eligibility, and local laws and regulations. Players must be 18 or older to participate in pay-to-enter competitions. All competitions are subject to official rules, terms, and conditions. Prize awards are based on performance and may be subject to eligibility criteria. Availability may vary by location and legal requirements.
Written user reviews are not shown here. Check current App Store reviews >
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
Enhance social features like messaging or activity sharing.
Assumption to check: Limited social features for connecting with friends
Validate with people who use this workflow before building.
Hypothesis 2
Introduce community challenges or local event listings.
Assumption to check: No built-in community events or challenges
Validate with people who use this workflow before building.
Hypothesis 3
Provide users with in-depth stats and insights on their activities.
Assumption to check: Lack of detailed analytics on performance
Validate with people who use this workflow before building.
Hypothesis 4
Focus on a cleaner UI design with more white space.
Assumption to check: User interface can feel cluttered
Validate with people who use this workflow before building.
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
Supabase
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.
