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.
Russian Bank is the classic two-player Solitaire-style card game — a head-to-head battle of strategy and seizing opportunity
$1.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Russian Bank | Card Game: 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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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
Assumption to check: Limited game modes and customizations
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No AI difficulty options
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of social features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Single purchase model limits accessibility
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Russian Bank is the classic two-player Solitaire-style card game — a head-to-head battle of strategy and seizing opportunity. Also known as Crapette or Zank-Patience, this classic game has challenged players for over a century. If you enjoy Solitaire or competitive card games with strategy not luck, Russian Bank is your next obsession. PLAY YOUR WAY - VS Bot: Face off against a smart AI opponent with three difficulty levels — Easy, Hard, and Expert. The bot plays strategically, not randomly, and never cheats. - Local Two-Player: Hand the phone across the table or sit face-to-face. Player 2's cards automatically orient for comfortable viewing from the other side of the screen. - Local WiFi: Connect with a nearby player over WiFi or Bluetooth for lag-free local games. - Online Multiplayer: Challenge friends or match with opponents worldwide via Game Center in real-time. - Turn-Based: Start a match and take turns at your own pace — perfect for playing throughout the day. BUILT FOR PLAYERS WHO CARE ABOUT THE GAME - Authentic rules: Proper foundations, reserve piles, tableau building, and the Stop! penalty for missed compulsory moves. - Quick Game or Match mode — play a single hand or compete in a series to 150 points. - Hint system to help you spot the best available move. - Full undo support — take back moves within your turn. - Interactive tutorial walks you through the rules step by step. - Complete in-game rules reference. POLISHED & PREMIUM - Six handcrafted visual themes: Classic, Midnight Blue, Forest Green, Crimson, Ocean, and High Contrast. - Every card face drawn with precision — custom bezier suit symbols, four distinct suit colors. - Smooth card animations with satisfying sound effects and haptic feedback. - Works offline — no internet required for solo or local play. NO ADS. NO IN-APP PURCHASES. JUST THE GAME. Download Russian Bank and discover why this two-player classic has stood the test of time.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.