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
Solitaire Cash: Win Real Money
Forget the ordinary games
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
580,294 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included18 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 Solitaire Cash: Win Real Money: map the core Games 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
Incorporate multiple solitaire variations and game modes.
Assumption to check: Limited game variations leading to repetitive gameplay
Validate with people who use this workflow before building.
Hypothesis 2
Provide an ad-free subscription option for a premium experience.
Assumption to check: Frequent ads interrupt the gaming experience
Validate with people who use this workflow before building.
Hypothesis 3
Implement a robust achievement system and user statistics tracking.
Assumption to check: Difficulty in tracking progress and achievements
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
Forget the ordinary games. Here you play for something bigger, where winning the game actually matters. Are you ready to play for real? Solitaire Cash® is where a true classic and real cash prizes meet. Jump into a world of brain-teasing fun, and leave with your heart filled with nostalgia and pockets filled with rewards. After downloading the game for FREE, you can start playing regular or cash tournaments and win real money. We've carefully designed the game to have a smooth and modern feel to it and threw in some classic, Klondike Solitaire game elements we all love. If you like Spider/Freecell/Patience/Pyramid/Blackout/Big Run or 21 Blitz Solitaire – you'll LOVE Solitaire Cash®! You'll be matched with other players within the same skill level, and you all will get the same deck – so the game is totally fair and skill-based. Those who finish among the top 3 – WIN! How to Play: - Drag cards in the tableau (seven piles that make up the main table) to build sequences in descending order and alternating color. - If you uncover an ace, place it first in one of the foundation piles (four piles at the top of the board). - Start building sequences of the same suit in each foundation pile, chronologically, from ace to king. - If you can no longer move any of the face-up cards, you can always tap the stockpile to see if it has any good cards for you to play. - Keep moving cards from the tableau to the foundation piles, and stacking them up until you reach the highest possible card in each pile. - Got no more cards to play? Submit your score and enjoy a bonus for finishing early. - The faster you clear the board, or get as close to it as possible – the higher your ranking will be on the Leaderboard, and the bigger the prize! Enjoy Some of These Thrilling Features: - Win real money tournaments - Secure deposit using PayPal & Apple Pay - Cash-out securely using PayPal - Play with no distracting ads - Enjoy awesome daily gifts & bonuses - Undo moves - Take part in multiplayer tournaments with trophies & big prizes - Enjoy nice & smooth gameplay that'll keep you coming for more - Enjoy special challenges & surprises - And many more! Solitaire Cash® is FREE to download and play. Note that in AZ, LA, ME, MI & MT all tournaments are played solely for Bonus Cash So, get ready to… TURN YOUR SKILLS INTO DOLLAR BILLS! Download NOW to let the fun begin! Need any help? Feel free to contact our Support Team at [email protected]. --- LIKE us on Facebook https://www.facebook.com/solitairecash/ Follow us on Instagram https://www.instagram.com/solitaire_cash/ Follow us on Twitter https://twitter.com/solitaire_cash
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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
Firebase
AdMob
React Navigation
BUILD KIT DIFFICULTY
Expert
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.
