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.
Your idea
Free
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.
Your first Build Kit is free with a verified email.
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 Gummy: AI Game Maker: map the core Developer Tools 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 design flexibility compared to full game engines.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Learning curve for non-technical users.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Performance issues with complex games.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Basic analytics for user engagement.
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.
Your idea. Your world. Your game. Turn an idea into a playable game with Gummy. Describe what you want, optionally add an image, and create something you can play, change, and share. No coding experience needed. MAKE SOMETHING WORTH PLAYING A racing game on another planet. A puzzle with a strange twist. A platformer where the rules change every level. Create 2D and 3D games inspired by your imagination, from quick arcade challenges to more ambitious worlds. BUILD THROUGH CONVERSATION Keep shaping your game after the first version. Ask Gummy to change the controls, add enemies, introduce a new mechanic, or try a different visual style. “Add wall jumping and moving platforms.” “Give the boss three attack patterns.” “Turn this into a colorful underwater world.” Play your creation, decide what comes next, and keep building. MAKE IT LOOK AND SOUND LIKE YOUR IDEA Explore characters, backgrounds, objects, music, and sound effects in the asset library. Add your own images and give your game a style that feels yours. DISCOVER AND REMIX Explore games made by the Gummy community. Find an idea you love, remix it with your own twist, and share what you create. Try new challenges, compete on leaderboards, and discover your next inspiration. SHARE YOUR GAME Publish to the Gummy Arcade or share a playable web link with friends. Supported games can be played in a browser without downloading Gummy. TAKE MORE CONTROL Open the built-in code editor to explore and change the code behind your game. With Gummy Pro, edit supported game settings and access advanced OpenAI GPT and Claude models for more ambitious creations. Pro also includes 40 bonus Coins every week, a Premium profile badge, and early access to new features. CURIOUS HOW IT WORKS? Gummy Learn helps you explore the code behind your creations through personalized lessons and quizzes. Create your first game. Then see where your imagination takes it. Some features and AI models require Gummy Pro or Coins. Privacy Policy: https://gummy.run/privacyPolicy Terms of Use: https://gummy.run/TermsOfUse
Written user reviews are not shown here. Check current App Store reviews >
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.
Not assessed in a Build Kit yet.
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.