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.
A museum of tiny computers
$3.99 · In-app purchases
Evidence scope: #10 is the current overall US Paid chart position. 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 Tiny Computers: map the core Entertainment workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
A museum of tiny computers. Please touch the exhibits. Tiny Computers is made for iPhone Duo. Fold your Duo into tabletop mode and it becomes a miniature machine from decades of computing, with the screen above and a working keyboard below. Spend a little time with an old favourite — or discover the computer your parents grew up with. Some computers stay with you long after you stop using them. Now there's room for them on your desk again. EXPLORE THE COLLECTION Ten computers are ready to play with, inspired by the Macintosh, Commodore 64, IBM PC, Amiga 500, Windows 95, ThinkPad, iMac G3, iBook G3, PowerBook G4 and Windows XP. TYPE, DRAW AND PLAY Enjoy clicking keyboards, working command lines, paint programs, floppy disks and familiar desktop games. Open windows, write a note, draw something small and explore each computer's personality. Type 10 PRINT on the Commodore, run BASICA ROOFTOP at the DOS prompt, or load BRICKS from the Amiga's floppy. Occasionally, even Windows crashes. FIFTY NOSTALGIC SECRETS Every computer hides five nostalgic secrets: pieces of real computing history, a hidden game and, where its era had them, screen savers. Turn on the Hot Dog Stand colour scheme, ask the 1541 for its directory, meet Rover, or fill a 1984 Mac's memory until the bomb appears. Each computer's page in the collection keeps track of what you've found. Stuck? Open a hint, one at a time: what it is, where to look, then exactly what to do. MADE FOR IPHONE DUO Tiny Computers was designed around iPhone Duo's two displays. Bend your Duo into tabletop mode to bring each computer to life across the display and keyboard. Browse the collection and choose your next exhibit when your phone is closed. ALSO ON IPHONE AND IPAD No Duo? Every computer still works. On iPhone and iPad, Tiny Computers presents each tiny computer with simulated perspective: the same ten computers, keyboards and games. On iPhone, turn sideways and switch between the screen and the keyboard. On iPad, the whole computer fits on your display. For the real tabletop experience, use iPhone Duo. All ten computers are included. No ads, subscriptions or in-app purchases.
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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: Expensive subscription
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Missing features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor performance
Validate with people who use this workflow before building.
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.