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.
Record your ideas on the go or create entire music productions from scratch, we'll leave it up to you! This app is a portable multitrack audio and MIDI recording studio featuring virtual instruments, pitch and time ed...
$11.99 · 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 Audio Evolution Mobile Studio: 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 audio editing features compared to desktop DAWs
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Learning curve for new users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Performance issues on older devices
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited collaboration features
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.
Record your ideas on the go or create entire music productions from scratch, we'll leave it up to you! This app is a portable multitrack audio and MIDI recording studio featuring virtual instruments, pitch and time editing of vocals (*), unlimited undo/redo, mixing, real-time effects, automation and much more! Features: • Multitrack audio recording / playback • MIDI sequencing with piano roll editor and MPE support • Drum pattern editor (including triplets, use your own samples and effects chain per drum sound) • Automatically or manually tune your vocals with Vocal Tune Studio (*) : an editor to correct pitch and time of vocal recordings and the timing of any audio material. It features retune time, retune amount, volume and formant correction per note as well as vibrato controls. • Add tempo and time signature changes including gradual tempo change • Real-time effects including: chorus, compressor, delay, dual delay, reverse delay, reverb, flanger, noise gate and many more! • Flexible effect routing: an unlimited number of effects can be placed on a grid, featuring parallel effect paths. • Assign LFO's to effect parameters or lock parameters to tempo • Sidechain on the compressor effects • Inter-app audio effects and instruments • AudioBus support (including AudioBus remote) • Audio Unit instruments, effects and AU MIDI • Multi-output support for Audio Unit instruments • Virtual analog synthesizer 'Evolution One' featuring morphing oscillators, FM, Sub Osc, Noise, Portamento, 2 LFO's that can be routed to 12 targets, Moog type filtering, effects, ARP, sequencer and more! • Soundfont (sf2/sf3/sfz) support: free GS/GM Soundfont included, add more from the Soundfont shop or from your own collection • Non-linear editing with move, trim, split, cut/copy/paste, remove, cross-fade, time-stretching etc. with full undo/redo • Virtual instruments (comes with free instruments and more instrument packs to download) • Track freezing to save CPU usage • Clip volume and fade points • Loop playback • Automation of mixer and effect parameters • Mix-down to WAV, AIFF and ALAC • Metronome • Ghost track display on the piano roll • MIDI clock sync • MIDI remote control • Punch in/out • Unlimited number of tracks and groups • Offline effects: fade in/out, normalize, reverse, pitch shift, time stretching • Several grid options for aligning your samples (with tempo and time signature settings) • Export to other DAW's by rendering all tracks to separate audio files (stems) • Media server to access your files easily from a desktop computer • Multi-core support • AudioShare support • Trackpad support • Cloud sync using Google Drive and Dropbox In short: a complete portable multitrack music studio that will replace your fourtrack recorder or tape machine! (*) The following in-app purchases are available to expand your studio: • ToneBoosters effect pack 1 (Barricade, DeEsser, Gate, Reverb) • ToneBoosters EQ with frequency analyzer • ToneBoosters Compressor • ToneBoosters Ferox • ToneBoosters V4 Barricade • ToneBoosters V4 BitJuggler • ToneBoosters V4 Compressor • ToneBoosters V4 Enhancer • ToneBoosters V4 EQ • ToneBoosters V4 MBC (multi-band compressor) • ToneBoosters V4 ReelBus • ToneBoosters V4 Reverb • ToneBoosters V4 Sibilance • ToneBoosters V4 Voice Pitcher • Vocal Tune with two-voice harmonizer and Vocal Tune PRO, both real-time vocal pitch correction effects • Vocal Tune Studio: auto tune your vocals, pitch and time correction • Soundfont instrument packs • Loop packs from Function Loops The 'PRO' in-app purchase is only for people who downloaded version 1.x in the past and is not applicable to version 2.0 or higher. If you have any suggestions, questions or want to report a bug, please contact us! We'll gladly solve any problem! Facebook: https://www.facebook.com/AudioEvolutionMobile Forum: https://www.extreamsd.com/forum
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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.