The AUv3 instrument

The extension is an iOS Audio Unit, so it does not appear in Mac versions of GarageBand or Logic.

A LIBRARY / LETTERS switch chooses behaviour. In Library, a text field takes any word and plays it back as a single retro sample — from the bundled 500+ word library, from any word you've already played in the main app, or, as of 1.4.0, synthesised on the spot by the plug-in itself. Only a brand-new word pauses to render, showing SYNTH... while it does, and a word the plug-in renders is then instant in the app too. VIEW LIST opens the full library.

In Letters, the yellow A–Z keypad is front and centre — tap a letter and hear it spoken, like the original toy.

Set Language to Français, then type a word or put French words on the SEQ steps. Every vintage voice works in both languages. Sessions and presets saved before 1.5.0 open in English, exactly as they were.

The AUv3 has the same 16-step sequencer as the app, following your host's tempo and transport instead of the built-in clock. Seq Steps sets the loop to any length from 1 to 16 steps, Seq Rate picks 1/4, 1/8 or 1/16 notes, and Seq Fit is the automatable FIT switch. Two factory presets show both halves of the idea: Robot Chant puts a word on every step, Spelling Bee spells a word out and then says it.

A SEQ step is narrower than the text field beside it — a step fires on the beat and can't wait for a render, so it plays either a library word or one that has already been rendered, whether by the app or by typing it into the plug-in once. A word it can't find shows a ⚠ badge on that step rather than failing silently. A step holding a single letter always uses the recorded A–Z bank.

Some hosts report no tempo or transport to plug-ins. There the sequencer runs on its own clock at 120 BPM.

Ten factory presets — Default, Robot Voice, Tape Warp, Telephone, Tempo Stutter, Classic 1978, Hawking 1986, Odyssey 1968, Robot Chant, Spelling Bee — plus your own via your host's preset browser. 24 parameters cover pitch, speed, bit-crush, sample-rate, filter, envelope, LFO, stutter, the step sequencer, voice character and language. All four voices play in your DAW.