WBTRK

WBTRK is a music tracker in the classic mold — rows, steps and patterns — rebuilt for iPhone and iPad with a sample-accurate audio engine.

Write PHRASES (16 steps of notes, chords, instruments and effects), stack them into CHAINS, and arrange chains into a six-channel SONG. Loop a channel independently with STP/JMP markers, re-root a phrase per bar with chain transpose, and let each channel run at its own tempo while staying locked to one clock.

SOUND
• 12 engines: 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 slices across the keyboard
• AUv3 HOSTING: play your installed instrument plug-ins from the sequencer, per instrument

SHAPE IT
• 28 effects per note: delay, reverb, trance gate and autopan with tempo sync, retrigger, chorus, flanger, ring mod, wavefold, bitcrush, slides, vibrato, arps and more
• RANDOM dice that re-roll pitch, volume, envelope and pan on every hit
• Tables: looping per-note programs for instant arpeggios and tremolos
• Per-instrument swing and scale lock, full mixer with per-channel volume, pan, mute and solo

FAST TO PLAY
• The radial wheel: long-press any cell and rotate to dial in notes, chords, instruments or effects — it previews as you turn
• Double-tap places your last note or chord; select, copy, paste and transpose whole sections
• MIDI in (play and record, step or live), MIDI out and MIDI clock for hardware

KEEP IT
• Render your song to WAV, share songs as files, your session autosaves
• 26 themes plus a full theme editor — and a hex numbers mode, the way trackers used to count
• A built-in demo song shows off what the engine can do

Everything runs on your device. No account, no ads, no subscription, nothing collected.