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
Mini Chess - Check
Mini Chess is an innovative chess game designed specifically for Apple Watch, offering strategic gameplay on a compact 5x5 board.
$0.99 · In-app purchases
PRICE
$0.99
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 Mini Chess - Check: 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 an onboarding tutorial to teach chess rules and strategies.
Assumption to check: Limited tutorials or guides for chess beginners
Validate with people who use this workflow before building.
Hypothesis 2
Include customizable game settings for player matching.
Assumption to check: Inflexible matchmaking options
Validate with people who use this workflow before building.
Hypothesis 3
Enhance UI with better graphics and animations for pieces and boards.
Assumption to check: Lack of visual appeal
Validate with people who use this workflow before building.
Hypothesis 4
Add features to analyze games and suggest improvements.
Assumption to check: No analysis tools for post-game review
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
Mini Chess is an innovative chess game designed specifically for Apple Watch, offering strategic gameplay on a compact 5x5 board. Key Features: • Compact Board: Specially designed 5x5 board for watch display • Smart AI: Three difficulty levels from beginner to advanced • Easy Controls: Touch to move, green hints for valid moves • Immersive Experience: Smooth animations and haptic feedback • Theme Options: Multiple board themes to choose from • Dual Language: Full English and Chinese support Gameplay: • Classic chess rules • Undo move support • Real-time turn indicators • Quick game restart • Switch AI between black and white Perfect for quick chess matches anytime, anywhere. Whether you're commuting, taking a break, or just waiting, enjoy a quick game of chess right on your wrist. Download now and start your strategic battles!
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
Zustand
React Navigation
TypeScript
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.
