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.
Every habit has a cost
$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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Every habit has a cost. See yours — down to the last second and cent. Smoke is a beautiful, honest tracker for the habits you want to understand and maybe finally cut down: cigarettes, spliffs, vapes, IQOS and nicotine pouches — each with its own hand-drawn, chalkboard look and a satisfying animation you'll actually want to open. LOG IT YOUR WAY • Start a timed session — tap to light up, tap to put out — and Smoke records exactly how long you really smoke. The more sessions you time, the smarter it learns your personal average. • In a hurry? Hold the button to count one instantly, logged at your average time. No fuss. FIVE HABITS, ONE GORGEOUS APP • Cigarette & spliff — light it, watch it burn down, feel the lighter through haptics. • Vape — hold it like a fire button; the coil glows and vapor rises with every draw. • IQOS — the holder heats your stick and toasts around the ring, with a buzz before it ends. • ZYN & nicotine pouches — hold to open the can and take one; it empties as your day goes on. NUMBERS THAT HIT HOME See the money you've spent, the hours you've lost, your habit measured in "burned Bitcoin," and just how close that spend is to a Lamborghini. Break it all down by product and by 7 days, month, year or lifetime. EVERYWHERE YOU ARE • Home Screen and Lock Screen widgets with today's and this week's counts. • A full Apple Watch app — log straight from your wrist. • iCloud keeps every device in sync: iPhone, iPad and Apple Watch. • Private by design — your data lives in your own iCloud, never sold, never shared. We don't judge. We just count — beautifully and honestly — so you can decide what comes next. Track your habit. We'll do the math.
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.