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.
ANALOGyKIT Virtual Analog Drum Kit (AUv3)
$4.99 · 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 ANALOGyKIT: 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 sound options compared to more established music apps.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: In-app purchases may deter users.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Complex controls may overwhelm beginners.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Performance issues with heavy sound processing.
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.
ANALOGyKIT Virtual Analog Drum Kit (AUv3) Introduction ANALOGyKIT (“analog-ee kit”) is an AUv3 virtual instrument plugin that can run standalone, or in any AUv3 compatible host such as Logic Pro, GarageBand or AUM. Please note that the standalone version does not include a built-in keyboard - you need to connect a suitable MIDI device to play the synth. Please also note that ANALOGyKIT is not a drum machine, so does not have a built-in pattern sequencer. It has been designed as a virtual drum kit / drum module controlled via MIDI, using a separate sequencer plugin or piano roll in a DAW. ANALOGyKIT currently runs on iOS (iPad & iPhone) and macOS (Intel & Silicon) and is available as a Universal Purchase from the Apple App Store. If you’re planning on using ANALOGyKIT on Mac / desktop, please ensure that your favourite DAW / host supports AUv3 (not just AU). NOTE - ANALOGyKIT uses the same synthesis engine as ANALOGyDR so you can think of ANALOGyKIT as 8 x ANALOGyDR, plus pitch-sweepable oscillators, lo-fi bit-crushing, dedicated per-voice effects and a master / mixer section. Design Overview ANALOGyKIT is an 8 voice virtual analog drum synthesizer, i.e. it does not use samples. The design is based on the sound engines in early analog drum machines for the late 1970’s and early 80’s. Each voice comprises two tuneable pitched oscillators (with sweep), two noise sources and a variable mode filter with envelope. A lo-fi bit-crushing effect can also be applied to each voice independently. All eight voices have their own dedicated tempo-sync delay and reverb with gate effect. The master output section includes an 8 channel stereo mixer and simple one-knob controls for compression, limiting and clipping. Presets ANALOGyKIT comes with factory presets for Kits and individual Drums, and user presets can be saved or loaded using the OS file system browser. New Kits can be generated automatically by combining sounds randomly from existing factory Drum and Kit presets.
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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.