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.
Explore CarLoop, a unique sorting puzzle game
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.
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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Explore CarLoop, a unique sorting puzzle game. In the game, you guide colorful blocks from cars onto a track, automatically sorting them onto different cars. The controls are simple; you just need to observe, think, and enjoy the captivating effects. Whether you want to unwind after a long day or experience a simple yet engaging puzzle game, CarLoop offers a peaceful respite with every click. How to Play: Click on a car, and the different colored blocks on it will fly onto the track. The track automatically collects and sorts the blocks based on the car's position and the color of the blocks, much like water sorting, but in CarLoop, the controls are simpler and the animations are more enjoyable. Your goal is to group each color with the same car. Easy to pick up, but the game gets increasingly fun as new challenges appear! Why You'll Love CarLoop: Experience the perfect balance of relaxation and puzzle-solving. Each level is meticulously designed to guide you steadily forward with just a tap of the screen. Smooth animations and visually appealing effects deliver a relaxing yet rewarding gaming experience. Game Features: Unique car sorting puzzle gameplay with intuitive tap controls Visually stunning car physics and smooth conveyor belt movement Creative level design filled with exciting obstacles and mechanics Gradually unveil an amazing car collection Soothing sound effects and vibrant visual style Smooth gameplay Play anytime, anywhere, at your own pace Give yourself a break. Let the cars roll, complete each level, and enjoy a truly relaxing puzzle game experience. Download CarLoop now and start your journey.
Written user reviews are not shown here. Check current App Store reviews >
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.
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.