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.
Music Studio offers a complete music production environment for the iPad/iPhone/iPod Touch with features and a sound quality previously only known to desktop applications and expensive audio hardware.
$14.99 · 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 Music 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 instrument variety compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Bugs and crashes during audio playback.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Difficult navigation for new users.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: High purchase price with no trial offered.
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.
Music Studio offers a complete music production environment for the iPad/iPhone/iPod Touch with features and a sound quality previously only known to desktop applications and expensive audio hardware. It combines a piano keyboard, 124 studio-quality instruments with sustain, a fully fledged 127-track sequencer, extensive note editing, reverb, real-time effects and much more on a user-friendly interface. Try the free Lite version! AWARDS & REVIEWS • "A recent composition of mine started on the iPhone with Music Studio" - Jason Hayes, lead composer of "World of Warcraft" • "GarageBand on your iDevice" - TouchMyApps.com • "Music Studio is loaded to the brim with features and is a no brainer for composers" - AppAdvice.com • "If you’re at all serious about your music you can’t really afford to miss out on this app." - razorianfly.com • "Music Studio justifies the purchase of an iDevice if you're really into it." - appfreakblog.com • Awards from BestAppEver.com, iPhoneAppsPlus.com, apps4idevices, Palm Sounds FEATURES • Photorealistic dynamically configurable 85-key keyboard • Instant positioning via the slide gesture and resize with the pinch gesture • Drum pads, chord pads and chord programming • 194 studio-recorded instruments (16bit 44.1kHz sampled from real instruments) • 124 free instruments, 70 available in the in-app shop • 6 categories: symphonic, classical, band, electronic, world, drum kits • Release and attack time configurable per instrument • Sustain samples • Pitch bend wheel and accelerometer control • Audio tracks: • Microphone recording • AudioCopy & AudioPaste • iPod library or wav/mp3/AAC/ogg file import • Waveform and audio region editing • Record up to 24 channels simultaneously with CoreAudio (class compliant) hardware • Audiobus and Inter-App Audio support (input & output) • Sampler to create custom instruments and kits from audio files and recordings • Background audio playback and recording • Low-latency, highly optimized, 128x polyphony, battery saving audio engine • 100 drum loops • 10 real-time effects with lots of parameters: Reverb, Delay, 3-Band-Equalizer, Filter, Phaser, BitCrusher, Amp, Compressor, Limiter, StereoWidener • 127-track sequencer • Beat & metronome settings (tempo and signature) • Mute, solo, effect bus, pan and volume adjustment for each track • Edit tracks, bars and even individual notes: Draw, quantize, transpose, repeat, move, length, velocity, etc. • MIDI import and export • Save and load your songs and export to wav and AAC formats • iOS Files app support allows you to create and manage folders • Share your songs via email, Dropbox, iCloud Drive, AudioCopy and SoundCloud • Wi-Fi and iTunes file transfer to your computer • Songs and MIDI files can be opened directly from Safari and Mail • Unlimited undo and redo • Detailed in-app help • Play or record 2 different instruments at the same time with 2 keyboard rows • iPhone and iPad Retina Display supported • Compatible with CoreMIDI (MIDI in and out), Virtual MIDI and MIDI hardware. Video tutorials are available on the Xewton YouTube channel.
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.