# iotaTONE: Microtonal Keyboard — tiny differences matter most

> tiny differences matter most (iPhone/iPad app by Bond Institute Music Corporation.)

- Source: https://appshunter.io/ios/app/iotatone-microtonal-keyboard/id6739195820 (this page in markdown: same URL + `.md`)
- Developer: [Bond Institute Music Corporation](https://appshunter.io/developer/1784172215)
- Category: Music
- Price: $14.99
- Age rating: 4+
- Requires: iOS 15.0 · 155 MB
- Languages: English
- Released: 2026-04-04
- Data updated: 2026-08-29
- User reviews in markdown: https://appshunter.io/ios/app/iotatone-microtonal-keyboard/id6739195820/reviews.md

## What is iotaTONE?

Isomorphic, Polyphonic, Microtonal, Just Intonation
Musical Instrument & MIDI Controller for tablets & mobile phones
* Touch & Tilt  - Intuitive playing mechanism
* Isomorphic Keyboard - precision numeric & graphic display 
* Play melodies, chords, scales, instant inversions, effortless Arpeggios 
* 4 Distinct Playing Modes - Polyphonic / Monophonic x Touch / Hold
* Expressive - realtime FX Box controls. User configurable volume settings.
* Quantized Output for Rhythmic Effects

Microtonal Capabilities - explore Just Intonation & Pythagorean Tunings
* Includes Harmonic Table, Tonnetz, Wicki-Hayden + more
* Create your own microtonal mappings

iotaTONE combines touchscreen technology with mobile hardware device orientation & continuous controls to define a distinct new paradigm in music instrument design.

## Chart rankings

- #184 in Top Paid · Music (US App Store)


## Version history (last 2 releases)

### 2.3 — 2026-04-15

Important bug fix: resolved grace note insertion issue. Minor changes to user interface.

### 2.1 — 2026-04-04

No release notes.

## More apps by Bond Institute Music Corporation

- [Léon Light](https://appshunter.io/ios/app/leon-light/id6742379864)
- [Dual Core Drum Gadget](https://appshunter.io/ios/app/dual-core-drum-gadget/id6742909092)
- [Ventrilo Vox](https://appshunter.io/ios/app/ventrilo-vox/id6749665885)
- [Vectronome](https://appshunter.io/ios/app/vectronome/id6756826332)
- [Arpeggiano](https://appshunter.io/ios/app/arpeggiano/id6758108692)

All apps by Bond Institute Music Corporation: https://appshunter.io/developer/1784172215

## Related topics

[arranger keyboard](https://appshunter.io/ios/topics/arranger-keyboard) · [touchtone](https://appshunter.io/ios/topics/touchtone)

---

*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 2026-08-29.*