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.
Side by Play is preschool and kindergarten learning games for a parent and a kid to play together
$2.99
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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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.
Side by Play is preschool and kindergarten learning games for a parent and a kid to play together. It's not something you hand over so you can get dinner done. You sit next to them and read the line at the top. They do the tapping. It's built for about 15 minutes before bed, for kids 3 to 6. Almost every game in here is one my oldest and I made up on an iPad when he was little. We spent 15 to 30 minutes on them every night, and he lit up. Now your family can play them too. WHAT YOU'LL PLAY TOGETHER Counting Board • Adding and taking away, with the number sentence that goes with it • Times as boxes, and sharing a bunch out onto plates until it's fair • Area and perimeter, patterns, and naming shapes Letters and Rhymes • Trace a letter together. It checks every stroke, so half an A doesn't count • A rhyming words race and a word ladder • A silly picture made from your words, saved to the fridge Map Pieces • A states and capitals game for kids who can't read yet • Drag a piece back into the map, then find its capital • The 50 states, the countries of the world, or the seven continents • Where we're from: zoom in on a place you know and talk about its towns, rivers, lakes and mountains Feelings • An emotions game: name the face, then make the face • Two questions every time: when did you feel it, and when did someone else? HOW A NIGHT WORKS Pick 5, 10, 15 or 20 minutes. When time's up, the app winds down on its own and shows the stars your kid earned tonight in a night sky. Stars buy silly dares the grown-up has to do: a silly dance, a song in a funny voice, one extra book. More than one kid? Each one gets their own stars and sky. Just exploring? Just learning earns nothing and saves nothing. PRIVATE, AND PAID FOR ONCE No ads. No accounts. No subscription, and nothing to buy inside the app. It works with the wifi off, and nothing your kid does ever leaves the device.
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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.
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.