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.
Work with what you love.
$3.99 · 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.
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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.
Rork plan preview for Metronome touch: map the core Music workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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: Limited beat patterns available
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No visual feedback for tempo changes
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inconsistent sound quality on different devices
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Steep learning curve for new users
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Work with what you love. For iPhone, iPad, and Mac — one app across all your devices. One-time purchase. No subscriptions. High-precision engine (sample-accurate timing) A newly developed timing engine delivers exceptionally stable and accurate tempo across all supported devices. From 20 to 999 BPM. Pendulum metronome A visual metronome inspired by classic mechanical pendulums — intuitive, elegant, and easy to read. Fully synchronized (phase-accurate) Synchronize multiple devices seamlessly. Supports Ableton Link for shared tempo and phase sync (beat alignment) with compatible apps and hardware. Tick patterns (rhythmic step loops) Create rhythmic loops with 1 to 18 ticks. Each tick is a step in the loop, repeating seamlessly. For every tick, choose individually: • Tick sound (loud or soft – accent) • Tock sound (loud or soft – unaccented) • Silence (rest) This provides precise control over the audible rhythm pattern. Presets Save unlimited custom presets including BPM and tick patterns. Automatically synchronized across your devices via iCloud. Sounds and appearance Choose between light and dark mode. Select from a set of professional metronome sounds. Razor-sharp visuals Fully vector-based graphics ensure perfect rendering on all display sizes. Accessibility Built with full VoiceOver support. All core functions are accessible through clear, structured audio feedback. Better than ever A modern architecture, improved synchronization, and a highly optimized timing engine ensure a fast, reliable, and precise experience on every device. Immerse in pure precision. Metronome Touch. Download on the Apple App Store. More information: www.cu4uc.com
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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.
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.