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.
"Catan", the legendary strategy game provides gaming fun anytime, anywhere.
$4.99 · 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 Catan Classic: 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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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: Complexity in understanding game rules
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited online matchmaking options
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of player communication features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Performance issues on older devices
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.
"Catan", the legendary strategy game provides gaming fun anytime, anywhere. True to the original game, you can compete with up to four players for the most settlements, the longest roads and the largest army. You can trade with each other and claim the precious land with all its resources. The game allows you to challenge other Catan fans online via cross-platform multiplayer to prove your strategy skills or play against the AI: Various computer opponents, each with their own individual characteristics, will prove themselves worthy competitors: the pirate Jean, who knows no compromise, Vincent the merchant, who never allows himself to be cheated, Sean the knight, who takes what is rightfully his... The popular Catan expansions "Seafarers", "Cities and Knights" and two new special scenarios are available as In-App purchases. The complete Seafarers expansion includes more than 10 additional scenarios with an extensive campaign. Become Harbormaster, discover new islands and extra game elements like ships, gold fields, treasures and pirates. Ahoy! The Cities and Knights expansion introduces various new gameplay mechanics that add even more variety to Catan. Invest new trade goods in city improvements to build one of the three metropolises of Catan – but beware of the barbarians attracted by Catan’s new wealth! You’ll need your best knights to fend them off! C&K contains a short campaign and 7 challenging maps. Exciting adventures await you in the two new scenarios "Enchanted Land" and "The Great Canal". Vanquish dragons and bag their treasures or build a canal to help barren grain fields bloom once more. Features: - Available languages: English, German, French, Dutch, Spanish, Portuguese, Japanese - Original "Settlers of Catan" rule set - Update 4.0+: Synchronous online multiplayer games - Smart computer opponents with individual strategies - Scrollable game board including zoom option - Freely combinable game settings - Game statistics - Comprehensive tutorial - Seafarers LITE: New scenario "The 4 Islands" and two additional game variants - Cities and Knights LITE: Test the new expansion in the scenario “The first Island” - 3 different graphic sets to choose from ***** Catan FAQ: Question: An expansion seems gone after an update or reinstallation of Catan or after restoring the device? Answer: Don’t worry! Your initial purchase is already saved in your iTunes account. You can restore your InApp purchases by selecting the restore-option in the Catan IAP menu. Question: I lost my campaign progress after reinstalling, updating or restoring my device. Is there any way to restore it? Answer: When saved games can’t be automatically restored, we’ve integrated a cheat code: In the campaign mode go to select player and enter „CatanWarp*“ (* = 1–15) as your player name and confirm. Exit the game via the home button and restart it. The campaign can now be continued from the specified level number (1–15). Levels up to the specified number will be unlocked in the custom game mode as well. Question: Are dice rolls really random? Answer: Of course! All dice rolls are 100% random and not modified in any way. We’re avid Catan players ourselves. We’ve played the iOS version hundreds of times while developing the program. There have been times when we won and lost a few games in a row because of the dice - just like when playing the board game! ***** Questions or suggestions for improvements: Mail to [email protected] We are looking forward to your feedback! For more information on news and updates: www.usmgames.com or visit us on www.facebook.com/UnitedSoftMedia and twitter.com/USM_News *****
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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.