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.
MAKE MUSICAL MACHINES!
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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 Phase Chimes: 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: Can't play offline
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Algorithm doesn't understand taste
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Shuffle-only on free tier
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.
MAKE MUSICAL MACHINES! Link gears together to compose surprisingly complex rhythms and melodies. Runs as an AUv3 MIDI plugin in host apps like AUM and Logic Pro (for iPad), or as a standalone app so you can explore musical ideas on your iPhone or iPad whenever inspiration strikes! THE CONCEPT - Differently-sized gears define gear ratios, which produce polyrhythms. - The connection angle between gears determines note pitch. Use these simple principles to create generative compositions with a visually elegant user interface. Compose patterns that evolve over time, or perform live by changing and arranging gears on-the-fly. FEATURES - Set each gear's size, offset, velocity, duration, and MIDI channel. - Store multiple snapshots of your composition and smoothly transition between them. - Reposition groups of gears to transpose and re-harmonize multiple notes at the same time. - Almost any aspect of a composition can be randomized. - Control external software or hardware instruments when in standalone MIDI mode or as an AUv3 plugin. - Synchronizes with your DAW's timeline to play in time with other tracks. - Get started quickly with an onscreen tutorial and a bunch of factory presets. SOUNDS Select from internal sounds such as a sampled grand piano, a Wurlitzer, and a vintage synthesizer. Whether you want to create a live audio-visual performance, add a polyrhythmic layer to your project, or compose an ambient, meditative atmosphere, Phase Chimes will surprise you with something new every time you engage with it.
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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.