24-TET Keys: Microtonal MIDI
24-TET Keys: Microtonal MIDI is a specialized keyboard app for iOS and iPadOS that enables quarter-tone performance and MIDI control.
The App DNA
What makes this app unique?
It removes the physical limitation of standard 12-key-per-octave instruments, allowing musicians to play microtonal intervals without needing custom-built hardware.
For Musicians and composers interested in microtonal music, xenharmonic writing, or Middle Eastern maqam who require a MIDI controller for quarter-tone intervals.
What does it look like?
Key features
Provides multiple microtonal keyboard layouts including piano-derived, domino, and isomorphic honeycomb, with real-time morphing between them.
Sends microtonal MIDI data to external DAWs like Logic or GarageBand, assigning each note to its own channel to maintain pitch accuracy.
Generates sound directly within the app using touch-based polyphonic input, allowing users to hear quarter-tone intervals without external hardware.
How much does it cost?
The app is currently offered as a free tool with no ads or account requirements.
Velocity
Maintenance developmentnew contentperformanceShow more...
The app currently ships at a maintenance cadence, with two releases recorded over the last three months and the latest update arriving just 3 days ago. Development is focused on core functionality and stability, as evidenced by the recent expansion of the keyboard range. The release history shows a stable, albeit infrequent, pattern of updates. There is no evidence of live-ops or rapid feature iteration, suggesting a focus on long-term utility rather than frequent content drops.
Who built it?
Maxim Oransky
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Chromophone: Music VisualizerUser Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for 24-TET Keys: Microtonal MIDI
How's the Music market?
24-TET Keys: Microtonal MIDI serves a specialized segment within the Music category, maintaining a 4.6-star rating across its initial user base. Its free-to-use model provides a low-friction entry point for experimental musicians compared to paid desktop microtonal software.
Read the market outlookThe rivals identified
Unlock the deeper market read.
Access the full report for freeThe Analyst's Read
Key takeaways for 24-TET Keys: Microtonal MIDI
Where is it heading?
The microtonal music market is consolidating around accessible mobile tools that bridge the gap between experimental theory and DAW integration. 24-TET Keys: Microtonal MIDI is well-positioned to lead this segment if it expands compatibility with industry-standard tuning formats, which would secure its role in professional workflows.
- The latest release expanded the keyboard range to a full piano, indicating active development of the core interface.
- The app maintains a maintenance-level release cadence with two updates in the last three months, suggesting a stable feature set.
The SWOT
- Morphing keyboard layouts enable rapid transition from standard piano fingerings to isomorphic microtonal patterns
- Polyphonic MIDI output maintains tuning integrity across external DAWs via per-channel pitch bend
- Implementing Scala file support would capture users currently using desktop-based microtonal software
Next best moves
Ship Scala file import because it is the primary barrier to adoption for established microtonal composers → expand addressable market
+ 1 more prioritized moveThe counter-intuitive read
The lack of Scala support is a strategic advantage for now…
Read the full takeBottom line
24-TET Keys: Microtonal MIDI successfully lowers the entry barrier for quarter-tone performance via its morphing keyboard layouts. Prioritizing Scala file support would unlock the professional composer segment, transforming the app from a niche tool into a standard utility for microtonal production.
Unlock 2 critical frictions, 1 market threat, 1 more prioritized move and the analyst’s take.
Access the full report for freeFAQ
Is 24-TET Keys: Microtonal MIDI suitable for professional music production?
Does 24-TET Keys: Microtonal MIDI support custom tuning files like Scala?
What is the difference between 24-TET Keys and a standard MIDI keyboard?
Are there other apps for playing microtonal music?
Sources
- [1] App Store
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