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.
Discord4 is the latest version of our most popular and long-lived product, our Discord stereo pitch shifter
$8.99 · 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.
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Combine features and design from your favorite apps.
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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 Discord4: 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 offline access to music
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Complicated user interface
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inconsistent audio playback quality
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Difficult music discovery
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.
Discord4 is the latest version of our most popular and long-lived product, our Discord stereo pitch shifter. Originally modeled from the H910, Discord has long since become its own effect and a studio standby, and this version includes major additions to further stretch its capabilities. This application includes a stand-alone version (with Inter-App Audio) and an AUv3 effect for use in hosts that support that format, such as Beatmaker 3, AUM, Cubasis, and Garageband. A full PDF manual is available at the Audio Damage website. Discord4 consists of three separate algorithms: a "vintage" mode (the original Discord algorithm, modeled on the Eventide H910 and H949), a "clean" mode for more modern shifting sounds, and a "granular" mode for experimental effects. Each mode has its strengths, depending on the input material, and Discord3 has a broad palette of capabilities as a result. The P1 and P2 algorithms have full control over the buffer (window) size of the shift effect, for fine tuning the shift to the input signal, or for stranger sound effects. At the extremes of the six-octave shift range, some truly strange aliasing and artifacts can be had with this control. Discord4 retains its pair of tempo-synced delays and bandpass filters from previous versions, and adds a reverb in the feedback loop (for easy access to "shimmer" effects). We have also replaced the modulation sources from the original with our all-new FLFO (Flexible LFO) design. Panorama controls are included to control the stereo width of the wet signal. Finally, soft saturation and limiting have been added or improved throughout the signal path, for an overall improved sound and added vintage-style warmth, and to allow for extreme feedback experiments without fear of overloading your DAW's channel. Features • Pitch Shifting: Discord4 contains a pair of shifters with three separate algorithms (Vintage, Clean, and Granular) for different styles of pitch shifting. • Buffer Size Control: The P1 (Vintage) and P2 (Clean) algorithms have a Buffer Size control, from 32 to 2048 samples, for fine-tuning the pitch shifting effect. • Delay: Tempo-synced or free-running delays with feedback, cross-feedback, and a sophisticated bandpass filter. • Reverb: A simple stereo reverb is added to the feedback path, for "shimmer" effects and further sound exploration. • Modulation: Two of our new FLFO (Flexible Low-Frequency Oscillator) with tempo sync and an arbitrary waveform, capable of a nearly infinite number of modulation shapes using only three controls. • True Stereo Operation: Discord4 has a true stereo signal path, with entirely independent control over each side, finishing with panorama settings for stereo width. • MIDI Note Control: Six octaves of pitch-shifting can be controlled with MIDI note input. • All-New GUI: Vector-based resizable user interface. • Presets: Cross-platform XML-based preset manager.
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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.