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
MAHJ CLOSET
YOUR MAHJONG LIFE, BEAUTIFULLY ORGANIZED
$9.99
PRICE
$9.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
2 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 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 MAHJ CLOSET: map the core Lifestyle 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
YOUR MAHJONG LIFE, BEAUTIFULLY ORGANIZED. JUST $9.99 — ONE-TIME PURCHASE. NO SUBSCRIPTION. If Mahjong has become more than a game for you, MAHJ CLOSET is your place for all of it. The tiles you love. The mat you’re dreaming about. The table you’re planning for Thursday. The pieces you’re hunting for. The things you want to buy someday. The tables you can’t wait to create. COLLECT. SHOP. TRY IT ON. STYLE. HOST. SHARE. LEARN. COLLECT Finally, a beautiful place for your Mahjong collection. Keep your tile sets, mats, tablecloths, racks and accessories organized with photos, brands, favorites and more. Know what you have. Know what you love. SHOP Discover Mahjong pieces and accessories from shops we love. Find something you can't stop thinking about? Save it to My Closet or your Wish List. TRY IT ON Don't just shop it. See it on your table. Bring pieces from the Shop into your own tablescape and see exactly how they look with what you already own — before you buy. STYLE MY TABLE Design the table before you set the table. Mix your mats, tiles, racks, tablecloths, flowers and accessories. Create the look. Save the tablescape. Come back to it whenever you're ready to play. WISH LIST Because there is always another Mahjong piece you want. Save the things you're dreaming about and see how they'll look in your own tablescape. HOST Planning a Mahjong game, lesson or event? Plan your tables, organize what you need to bring, create your checklist and keep the whole event in one place. SHARE Love your table? Create a custom QR code and let your guests instantly discover your tablescape and the pieces they love. LEARN New to Mahjong? Need a quick answer? Teaching someone else? Keep Mahjong rules, tips and helpful resources right in your back pocket. Whether you're a collector, hostess, teacher, beginner, shopper, stylist or simply Mahjong obsessed, MAHJ CLOSET brings your entire Mahjong life together in one beautiful place. No subscriptions. No ads. Just your Mahjong life, beautifully organized. COLLECT. STYLE. PLAY.
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
Allow user-defined categories for better organization.
Assumption to check: Limited clothing item categories can frustrate users
Validate with people who use this workflow before building.
Hypothesis 2
Enable sharing features to enhance social interaction.
Assumption to check: No option to share outfits with friends
Validate with people who use this workflow before building.
Hypothesis 3
Implement a calendar feature for outfit planning.
Assumption to check: Lack of outfit planning features for future dates
Validate with people who use this workflow before building.
Hypothesis 4
Add a shopping feature for users to purchase recommended items.
Assumption to check: No integration with shopping for new items
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
react-navigation
zustand
expo-image-picker
axios
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.
