# WBTRK — Pocket groovebox with AUv3 > Pocket groovebox music tracker with AUv3 support for iPhone and iPad. (iPhone/iPad app by LASZLO DOBROVOLSZKI.) - Source: https://appshunter.io/ios/app/wbtrk/id6779159104 (this page in markdown: same URL + `.md`) - Developer: [LASZLO DOBROVOLSZKI](https://appshunter.io/developer/6779159106) - Category: Music - Price: $9.99 - Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 18.0 · 15 MB - Languages: American English - Released: 2026-06-23 - Data updated: 2026-08-25 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/wbtrk/id6779159104/reviews.md ## What is 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. ## Key features - Sample-accurate audio engine - Speech synthesizer (TALK and SING modes) - 15 diverse sound engines - 28 per-note effects - MIDI in/out and clock support - AUv3 hosting - Song rendering to WAV ## Chart rankings - #124 in Top Paid · Music (US App Store) ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/wbtrk/id6779159104/reviews.md ### 5/5 — Amazing Tool! *2026-07-29* Wow, what an amazing tool, almost like the M8! So cool! Would be super awesome if it could not only host AUv3 Instruments, but AUv3 FX as well. Especially since Eventide FX/FabFilter Plugins are a thing on mobile these days! **Developer response:** Thank you for the great feedback! I will look into the Auv3 FX, hopefully it can come to the app in the next release! ### 5/5 — Brilliant *2026-07-26* Trackers Forever. Extraordinarily well thought out, moves the trad workflow into a fluid touch app future. Radial menus, AUv3, sample chopping etc etc. Top of the platform. **Developer response:** Thank you for the kind words, happy that you like it! ## Frequently asked questions about WBTRK ### What is WBTRK? WBTRK is a music tracker application for iPhone and iPad that features a sample-accurate audio engine and a unique speech synthesizer. It allows users to create music by building patterns, chaining them, and arranging them into songs. ### Does WBTRK have ads? No, WBTRK is ad-free. The app description explicitly states 'no ads, no subscription, nothing collected'. ### How much does WBTRK cost? WBTRK is a paid application, priced at $2.99. There are no in-app purchases or subscriptions mentioned. ### What devices support WBTRK? WBTRK is supported on both iPhone and iPad. It is rated for ages 4 and up. ### Can I use external MIDI devices with WBTRK? Yes, WBTRK supports MIDI input for playing and recording, as well as MIDI output and MIDI clock for hardware synchronization. This allows for integration with external synthesizers and controllers. ### What sound engines are available in WBTRK? WBTRK offers 15 sound engines, including classic chip synths, a speech synthesizer, a granular engine, a modal percussion engine, and a sampler. It also supports AUv3 instrument plug-ins. ### How often is WBTRK updated? The latest version of WBTRK is 2.2, which was last updated on July 22, 2026. This indicates a relatively active development cycle. ### Can I export my music from WBTRK? Yes, you can render your songs to WAV format and share them as files. The session also autosaves, ensuring your work is preserved. ## Version history (last 5 releases) ### 2.5 — 2026-08-18 - several bug fixes, including the AUv3 loading race issue - new and more adapted layout for iPad ### 2.4 — 2026-08-13 • AUv3 effect plugins: insert on any channel or the master bus, with dry/wet mix • AUv3 Host • MIDI export and instrument • Stem export • Full-screen visualizer: wave, rings, spectrum, starfield and XY scope modes • New app icon • Several bug fixes ### 2.3 — 2026-08-01 An ambient pack: three new engines, a reverb that runs to thirty seconds, and true stereo instruments. NEW ENGINES • 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. NEW EFFECT • XL REVERB — decay from half a second to thirty, with pre-delay, damping and a modulated tail. The original REVERB is untouched, so your existing songs sound exactly as they did. Better touch handling, and less bugs. ### 2.2 — 2026-07-22 IPAD • The interface now fills the whole screen (no more phone-sized column) • The SONG page shows 32 rows at once — half the song on one screen • The radial wheel works correctly in landscape PLUG-INS (AUv3) • Songs remember their plug-ins: a saved song now reloads the plug-in AND the exact sound you dialed inside its own screen • Plug-in notes are sample-accurate with the built-in voices (they used to fire early) • Plug-ins follow the song's tempo and transport — arpeggiators and synced effects stay in time • A crashed plug-in is detected and reloaded automatically • Mute, solo and faders now also control plug-in channels and what goes out over MIDI PLAYING & TIMING • On PHR/CHA, stepping to another phrase or chain while playing now switches at the loop — classic tracker pattern queueing • On the SONG page, play starts from the selected row • The top bar shows the tempo actually playing — watch it surge and settle through the demo • Tempo changes now land exactly at any bpm (non-integer offsets used to be swallowed) • RETRIG no longer nudges other channels' notes late • MIDI clock out is timestamped — external gear locks rock-steady • Live playback and rendered WAVs now match exactly DEMO SONG • The demo grew into a full tour: 14 engines, all 28 effects, tables, the RANDOM dice, a real amen-style break at 144 — and a two-voice duet chorus FIXED & SAFER • Instrument previews start clean — no leftover song delay/pan/tables • "Render WAV" handles very long and endlessly looping songs gracefully • Unplugging headphones pauses playback instead of switching to the speaker • The panic button now also silences plug-ins and external MIDI gear • Your work autosaves seconds after every edit (not only when leaving the app) • Open .wbtrk songs straight from Files/AirDrop — and your projects are now visible in the Files app for backup • Better recovery from phone calls, Siri and audio-system resets — plus many smaller fixes ### 2.1 — 2026-07-18 Your tracker learned to sing! NEW ENGINES • SPEECH — a talking, singing robot. 56-word bank, four voices, TALK mode (notes pick words) and SING mode with the new LYRICS setting: one note column picks the word, the next carries the melody. Hold a syllable across notes for true melisma. • GRAIN — a granular cloud over any recording: size, density, spray, scan, per-grain pitch. Nine presets from Geiger-counter glitch to frozen drones. • MODAL — struck-resonator percussion: marimba, vibraphone, kalimba, bells, steel pan and more, with structure/brightness/ring/strike controls. ## Apps similar to WBTRK | App | Rating | Price | Category | | --- | --- | --- | --- | | [Melthaven](https://appshunter.io/ios/app/melthaven/id6761633340) | 5.0 (4) | $2.99 | Music | | [Little Arp Monster](https://appshunter.io/ios/app/little-arp-monster/id6778352056) | 4.4 (5) | $5.99 | Music | | [VinylScratch — DJ Scratch Pad](https://appshunter.io/ios/app/vinylscratch-dj-scratch-pad/id6778534370) | 5.0 (2) | Free | Music | | [Dead Kitty](https://appshunter.io/ios/app/dead-kitty/id6503291826) | 4.8 (8) | $3.99 | Music | | [Gorilla - Bass Studio Suite](https://appshunter.io/ios/app/gorilla-bass-studio-suite/id6553996054) | 4.9 (8) | $6.99 | Music | | [XenoVerb - Reverb Suite](https://appshunter.io/ios/app/xenoverb-reverb-suite/id6752956183) | 5.0 (3) | $9.99 | Music | ## More apps by LASZLO DOBROVOLSZKI - [055U4RY](https://appshunter.io/ios/app/055u4ry/id6789734684) - [Breadbin](https://appshunter.io/ios/app/breadbin/id6791975357) - [NCTRN](https://appshunter.io/ios/app/nctrn/id6792679679) All apps by LASZLO DOBROVOLSZKI: https://appshunter.io/developer/6779159106 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*