WBTRK
Portable Music Studio
$8.99
A music studio in your pocket — write phrases, stack songs, perform them live. 15 engines, sampler, AUv3 hosting, MIDI. No ads, no accounts, everything on your device.
WBTRK is a complete music studio that fits in your pocket — 18 instruments, a sampler, per-note effects, a full mixer, plug-in hosting and MIDI, wrapped in a fast grid workflow that lets you write whole tracks with your thumbs.
WRITE
• Compose in a grid: 16-step PHRASES stack into CHAINS, chains arrange into a six-channel SONG — the fastest way to sketch on a phone, deep enough to finish
• The radial wheel: long-press any cell and rotate to dial in notes, chords, instruments or effects — it previews as you turn
• A chord picker with real harmony — maj7, min7, sus, dim — plus select, copy, paste and transpose for whole sections
• Loop channels independently, re-root phrases per bar, and let every channel run at its own tempo while staying locked to one clock
SOUND — 18 instruments
• Classic synths: pulse, saw, triangle, FM, noise, supersaw pad, sub, pluck, wavetable (draw your own cycle), and MODX — a dual-oscillator synth with a 4-LFO modulation matrix
• SAMPLER: record from the mic or import audio; trim, normalize, loop, ping-pong, reverse — or beat-chop at transients and play the slices across the keyboard
• A singing robot voice with real lyrics, granular clouds over any recording, and struck modal percussion — marimba, bells, steel pan
• An ambient section: DRONE, RESONATOR and TEXTURE — beds, drones and weather
• AUv3 HOSTING: play your installed instrument plug-ins from the sequencer, and insert effect plug-ins on any channel
SHAPE
• 29 effects on any note: delay, two reverbs (one runs to thirty seconds), tempo-synced trance gate and autopan, retrigger, chorus, flanger, ring mod, wavefold, bitcrush, slides, vibrato, arps and more
• True stereo instruments — place every oscillator in the field
• A full mixer: per-channel volume, pan, mute, solo and plug-in inserts
• RANDOM dice that re-roll a note on every hit, tables for instant arpeggios, per-instrument swing and scale lock
CONNECT
• MIDI in (play and record, step or live), MIDI out and MIDI clock for hardware
• Ableton Link keeps you in time with other apps and gear
KEEP
• Render your track to WAV, share songs as files, your session autosaves
• A lock-screen player with cover art drawn in your theme
• 27 themes plus a full theme editor — from the clean studio default to full retro, hex numbers included
• A built-in demo song that shows the whole studio off
Everything runs on your device. No account, no ads, no subscription, nothing collected.
Granular instruments are less resource hungry.
The developer, LASZLO DOBROVOLSZKI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- LASZLO DOBROVOLSZKI
- Size
- 16.8 MB
- Category
- Music
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.4 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Copyright
- © 2026 hejluxom

