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.
Touch the screen — and time slows to a crawl.
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.
Kit ready. Verify your email to download it.
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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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.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Touch the screen — and time slows to a crawl. Trace a line with your finger, and knives appear along your path — one after another, floating in frozen time. Let go, and the world snaps back to full speed: every knife flies at once, clearing the stage in a single neon burst. One-finger control, endless chain reactions. ■ One finger. That's all. - Hold: time slows down - Trace: fill your line with knives - Release: they all fly at once! No complicated controls — instantly satisfying from the very first touch. ■ The longer you trace, the bigger the burst One knife is nice. A whole line of them is spectacular. Clear the whole field in one perfectly timed release, and a cinematic slow-mo camera captures your finest moment. ■ Think before you release - Set off reactive barrels for one huge chain reaction - Cut ropes to drop payloads from above - Break bridges and watch everything tumble into the pit - Send knives through a ×3 gate and they triple — timing is everything! The right target, in the right order, at the right moment. Every stage is a little physics puzzle. ■ Targets that keep you thinking Shielded targets, splitting targets, rolling giants, flying saucers, metal brutes that deflect your knives… every stage brings a new twist to outsmart. ■ Unlock new ways to throw Shurikens, boomerangs, blazing trails, chain lightning — each unlock changes how you draw your line. ■ A world of pure neon Minimal, glowing, and satisfying — visual and audio feedback tuned for that perfect "aaah" moment. Perfect for a quick, satisfying break — or a deep arcade session. Five minutes turns into "just one more stage" before you know it. Stop time. Draw your line. Let them fly.
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.
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.