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.
Outgrowth is a sample-based instrument built collaboratively by Aqeel Aadam Sound and BlankFor.ms
$19.99 · 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 Outgrowth - Sample Instrument: 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 sample library compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: In-app purchase complexity
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Playback controls are not user-friendly
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No offline access for downloaded samples
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.
Outgrowth is a sample-based instrument built collaboratively by Aqeel Aadam Sound and BlankFor.ms. Designed with creativity, flexibility, and performance in mind, Outgrowth provides unique, multifaceted ways to reimagine audio with your mouse or keyboard. MPE compatible. Includes 100+ presets and 200+ samples built by BlankFor.ms. Outgrowth features five unique engines for processing samples: - Stem: A basic one-shot style player that repitches the sample - Retain: A granular stretching engine that sustains the sample indefinitely - Reflect: A looping algorithm that loops the sample at a consistent rate across all pitches - Radiate: An additive resynthesizer that maps each harmonic of the sample to a sine wave oscillator - Delve: A wavetable synthesizer in which the sample becomes the basis for a completely unique wavetable Outgrowth also features five standout audio effects for shaping your sounds further: - Subvert: A unique shaper that flattens or inverts the sample’s volume - Submerge: A singular effect for adding dimensional realism to sample repitching - Strike: A dynamic control for adding an acoustic-like response to sample playback and performance - Ripple: A one-knob tape emulation handcrafted by BlankFor.ms that can be subtle, deconstructive, and anywhere in between - Smear: A pre-ADSR reverb for congealing notes and blurring boundaries between pitch and texture And further still, Outgrowth offers a robust modulation matrix for generative or performative control over all parameters. Control every single parameter within Outgrowth via LFOs, unique random sources, velocity, note pitch, aftertouch, MPE control, and more. Finally, Outgrowth offers a robust preset system, including more than 50 bespoke presets and over 100 samples by BlankFor.ms. Explore ethereal ambient pads, haunted lofi keys, shimmering tape-infused plucks, gnarled percussive textures, and more.
Written user reviews are not shown here. Check current App Store reviews >
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.