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
SwarmaDie 2
SwarmaDie 2 is a polyphonic synthesizer inspired by the legendary analog
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
3 ratings · Top 15%
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 included13 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 SwarmaDie 2: 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
Implement a robust offline mode with caching.
Assumption to check: Limited offline functionality for music playback.
Validate with people who use this workflow before building.
Hypothesis 2
Prioritize testing and bug fixes before new features.
Assumption to check: Inconsistent user reviews indicating buggy features.
Validate with people who use this workflow before building.
Hypothesis 3
Add social sharing features to enhance user engagement.
Assumption to check: Lack of social sharing options.
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize their playlists with themes and colors.
Assumption to check: Limited customization options for playlists and libraries.
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
SwarmaDie 2 is a polyphonic synthesizer inspired by the legendary analog Dewanatron Swarmatron, originally designed by Brian and Leon Dewan in 2011. With 8 independent oscillators, dynamic swarm filter, two multitouch ribbons playable simultaneously, and complete ADSR controls, you can create organic and ever-changing sound textures. FEATURES: • 8 Oscillators with Pitch Floor, Range, and Swarm Control • Swarm Filter with dynamic tracking • Two Multitouch Ribbons (Pitch + Swarm) playable simultaneously • Preset Bar (Factory + User) • AU Plugin (AUv3) + Standalone • Touch-friendly interface inspired by the original hardware panel AUDIO CONTENT: SwarmaDie 2 is a synthesizer: it contains no pre-recorded music, only professional audio generation tools. COMPATIBILITY: Requires iOS 14.0 or later. Works as a standalone app and as an AU audio plugin (AUv3) in compatible DAWs.
Written user reviews are not shown here. Check current App Store reviews >
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.
