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.
Paint on one half of the page, fold it shut, rub it, then peel it open
$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.
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.
Paint on one half of the page, fold it shut, rub it, then peel it open. The paint has squished into a mirror image, and no two prints come out the same. Fold & Squish is the folded paper painting you probably did at school, rebuilt so the paint feels real. It's thick and wet. It spreads when you press on it, colors mix where they touch, and the paper leaves fine veins in it as it peels apart. It's fun for all ages, and oddly calming too. ON iPHONE DUO, YOUR PHONE IS THE PAPER Paint on the open screen, then close your iPhone Duo for real and the painting folds shut with it. Rub the outside screen to squish the paint, open the phone again, and there's your print. On any other iPhone or iPad you fold the page with the Fold button, and it works just as well. WHAT YOU CAN DO • Paint with a brush, big splats or drippy drops • Push wet paint around with a finger to mix it • Blow paint into wiggly shapes with the magic straw • Fold the page and rub it to squash the paint flat • Peel it open slowly to see what you made • Fold again over the top to add another layer PENCIL GUIDES Start from faint pencil outlines, like a butterfly, an owl, a flower or a ladybug, or from a blank page. The lines are there to help, but you can paint wherever you like. YOUR GALLERY Paintings save as you go and get taped up on a gallery wall. Tap one to look at it up close, keep painting on it, or share it with a small "Made with Fold & Squish" label in the corner. APPLE PENCIL The pencil paints and your fingers smudge. Pressing harder or tilting the pencil changes the brush, and on iPads with Pencil hover you can see where the paint will land before you touch the screen. EVERYTHING INCLUDED One price gets you the whole app: every tool, every paint color including gold glitter, star glitter and rainbow paint, every pencil guide, and room for as many paintings as you like. There are no in-app purchases and no subscriptions. Family Sharing is supported. SAFE FOR ALL AGES There are no ads, no in-app purchases, no accounts and no tracking, and nothing about you or your family is collected. Paintings stay on your device. Sharing sits behind a grown-ups check, and the grown-ups corner has a privacy summary and a sound switch.
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.