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.
App Overview
Tapko Stomp
Tapko Stomp is an AUv3 audio trigger for live performance
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Tapko Stomp: 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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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Enhance editing tools with more effects and controls.
Assumption to check: Limited sound editing features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Introduce social sharing options and user interaction.
Assumption to check: Lack of social features for sharing sounds
Validate with people who use this workflow before building.
Hypothesis 3
Implement a detailed onboarding tutorial for first-time users.
Assumption to check: Minimal onboarding process for new users
Validate with people who use this workflow before building.
Hypothesis 4
Add offline capabilities for sound playback.
Assumption to check: No offline playback option
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Tapko Stomp is an AUv3 audio trigger for live performance. It listens to your incoming audio and converts transients into MIDI notes, sample playback, or both. It's tailored towards live loopers but works for anyone that wants to be able to use any audio source to record MIDI. Tapko Stomp is actively developed with continuous refinements, performance improvements, and new creative features inspired by real musicians. Built for fast setup on stage: - Insert Tapko Stomp on an audio track - Route MIDI to your instrument (or load a sample directly) - Dial in sensitivity and filter range - Play with reliable trigger response Features - AUv3 effect with MIDI output - Real-time transient detection tuned for percussive input - Single trigger output with automatable MIDI note - Trigger mode: MIDI, Sample, or Both - Sample picker and clear - Velocity-based triggering with improved dynamic response - Velocity shaping: min, max, and multiplier - Persistent velocity readout that holds until the next trigger - Live trigger feedback, flash indicator, and velocity readout - AU preset compatibility in supported hosts - Preset persistence for selected sample files Great For - Live stomp sample triggering - Layering one-shots on live drum sources - Compact live rigs. Use Tapko Stomp in AUv3-compatible hosts such as AUM, Loopy Pro, Cubasis, and other iOS DAWs that support AUv3 MIDI routing.
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Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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BUILD KIT DIFFICULTY
Advanced
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.
