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.
Set your pinball machine to the exact pitch it was designed for
$4.99
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.
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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.
Set your pinball machine to the exact pitch it was designed for. PinLevel reads front-to-back pitch and side-to-side level to 0.1°, then tells you which leg to turn and by how much - in millimetres and bolt turns, not guesswork. A generic bubble level tells you "not level". PinLevel tells you "raise the back left leg one and a half turns". LEVEL IT PROPERLY • Live readout of pitch and side-to-side to 0.1°, colour-coded green when you're inside tolerance and yellow when you're close. • Presets for the angles the games were built around - Easy 5°, Standard 6.5°, Fast 7° - or a custom target from 3° to 8°. • Per-leg guidance on a top-down diagram of the machine: raise, lower or hold, with an estimated amount in mm and turns for your leg thread pitch. • It walks the real-world method: side-to-side first, then pitch on the rear legs, then re-check - because each one moves the other. HANDS-FREE • A tuner-style tone rises toward a bright, steady note as you approach level, so you can keep your eyes and both hands on the leg bolt. • Spoken cues call out which side to raise, and a haptic confirms each axis as it locks in. • Focus mode: a big, high-contrast readout you can read at arm's length, that goes solid green when the machine is ready to play. ON YOUR APPLE WATCH • The full live readout on your wrist, including the per-leg tiles - check the machine without crouching down to the phone. • Switch machines with the Digital Crown and change your target angle from the watch. CHECK IT WITHOUT LIFTING THE GLASS • Save a glass reference per machine while the playfield is level. From then on, a quick reading on the glass answers "has it drifted?" in seconds - no tools, no lifting. YOUR COLLECTION • Save a named setup per game with its own target and dimensions, and switch between them instantly. PRIVATE AND OFFLINE BY DESIGN No account. No ads. No tracking. No network connection - it never asks for one. One-time purchase, no subscription.
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.