Interval Based AUv3 MIDI Keyboard App

US In Theory lets you play and walk through the notes in a scale with keypad buttons      22/03/23

Cem Olcay has released an interval based AUv3 MIDI keyboard app, In Theory for iOS. This is what he has to say about it...

With the keypad buttons you can play and walk through the notes in a scale. +1 button plays the next note in the scale, +2 button plays two notes after in the scale and so on. Also you can create rich chord voices with the additional chord intervals.

It supports MIDI keyboard input for playing the intervals, MIDI CC input for toggling the chord intervals and AU params for everything else. You can also sequence it with MIDI sequencers.

Pricing and Availability:

$4.99 at the App Store

More information:


< More From: CEM OLCAY
Even more news...


Want Our Newsletter?


Featured Video

Brand new super-synth from UDO

Featured Video

Virtual knobs and jacks controlling over 160 virtual modules

Featured Video

Now ready for preorder

Featured Video

The sampler pedal that listens and moves with you

Featured Video

The Mantis has arrived

Featured Video

Bi-timbral noise-based soft synth with a wide range of possibilities

SUPERBOOTH 2024: Embodme Erae 2 Multi-Touch Surface 

Now ready for preorder

Superbooth 2024: Dreadbox Murmux Adept 8 voice Poly 

Limited Run- the final in the Murmux Trilogy

Computer Music Chronicles: The Amiga as a Guitar Pedal 

Older Music Machines & the People Who Still Use Them

Is the Korg Drumlogue worth it in 2024? 

Developments for Korg's instrument have been slow but promising.

Soma Labs Flux - New Instrument Presentation 

No touch, highly expressive

3 Maverick Synth Makers who Did it for Themselves 

Innovation is the main focus for these builders.

Hey there, we use Cookies to customize your experience on