
iotaTONE: Microtonal Keyboard
Just Intonation MIDI Synth
About
What's New in iotaTONE
2.5.0
November 11, 2026
Composer Tools — Groove · Harmony · Form. NEW: COMPOSER TOOLS • Pulse — a drum machine with 84 patterns in every style and meter, FILL and LONG fills, endings, and full pattern editing. Make and save your own grooves. • Chord Path — capture chord shapes from the board and play them back in time with the drums, with a bass line that follows. Create, save, load and share songs. • Form Builder — build your own arrangements & variations: intro, sections, second endings, choruses & coda. NEW: SONG OF THE DAY A new song every day, ready to play. Tap the star to open it, or browse Previous Days for past songs. NEW: ENSEMBLE Play together. One iotaTONE leads; others on the same Wi-Fi follow its board, key & tuning. NEW: CORNER CHORDS YOUR WAY Set your own Left and Right corner chords for every board in the Ratio Matrix — triads, sevenths, anything you like. MORE • SUSTAIN dome: hold your notes while you move, then rest or release. • Five colour modes: B/W, Colour, Hybrid, Bleach & Dim. • Panels dock to the screen edge as tabs & come forward when touched. • Up to 31 simultaneous voices. • MIDI Control Surface: light regions and corner chords from external MIDI. • Many refinements & fixes.
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