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. And now it sings.

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 — 18 engines

• The chip classics: 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

• SPEECH: a talking, singing robot. Build words from classic speech-chip sounds or just type them how they sound. TALK mode speaks them from the keyboard; SING mode turns a phrase into a lyric sheet — one note column picks the word, the next carries the melody, and a held syllable bends across notes like a real singer

• GRAIN: a granular cloud over any recording — grain size, density, spray, scan speed and per-grain pitch, from frozen drones to Geiger-counter glitch

• MODAL: struck-resonator percussion — marimba, vibraphone, kalimba, glass and church bells, steel pan — with structure, brightness, ring time and strike position

• 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

• DRONE — three oscillators through a wavefolder into a low-pass gate. Detune them, place each one across the stereo field, and hold a chord for as long as you like.

• RESONATOR — an exciter striking a tuned resonant loop: plucked string, bowed metal, blown pipe.

• TEXTURE — noise through two resonant filters: wind, rain, room tone, breath. Pin the filters or let them follow the keyboard. Ten presets each.

SHAPE IT

• 29 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

• A lock-screen player with cover art drawn in your current theme (and a switch to turn it off)

• 26 themes plus a full theme editor — and a hex numbers mode, the way trackers used to count

• A built-in demo song that sings about itself

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