In Theory - Interval Keyboard

In Theory - Interval Keyboard

Music theory based AUv3 MIDI

$4.99
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Details about In Theory

  • Released
  • Updated
  • iOS Version
  • Age Rating
  • Size
  • Devices
  • Languages
  • February 21, 2023
  • September 30, 2024
  • 12.0+
  • 4+
  • 22.62MB
  • iPhone, iPad, iPod
  • American English

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Developer of In Theory

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Version History of In Theory

2.2

September 27, 2024

This version adds an internal polyphonic sampler with piano sound to the standalone app.

2.1

September 2, 2024

This version updates the support section on the settings menu.

2.0

July 18, 2024

This version updates key and scale picker. - The scale picker won't close when you pick a scale. - You can select and audition a scale when you select one. - The scale picker will close when you press the done button on the top right. - You can select and audition a key and an accidental. - The key picker will close when you press the done button on the top right.

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1.9

June 29, 2024

This version updates the bottom toolbar UI. - Adds min and max octave knob controls. - Adds root button for returning to the root note at the middle octave quickly. - Performance updates and minor fixes.

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1.8

April 22, 2024

This version updates the scale picker. - Adds new favorite section and lets you mark the favorite scales. - The favorite scales will be universal between the Bud apps. - Scale picker shows the current scale with a checkmark. - Fixes the scale picker search bar's case sensitive search. - Fixes the "rate app" link on the settings menu for iOS 17+.

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1.7

May 29, 2023

This version adds support for running the app on Apple Silicon Macs.

1.6

April 19, 2023

This version adds support for saving AU presets in the AUv3 plugin. The saved preset will be shared between multiple AU hosts.

1.5

April 13, 2023

This version adds "Return to Root" and "Return to Mid Root" AU params to the AUv3 plugin. You return to the current key in the current octave or mid octave with those parameters.

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1.4

April 11, 2023

This version adds "return to root key" feature.  If you send C# note to In Theory, it sets the current note the root note in the middle octave. If you send D# note to In Theory, it sets the current note the root note in the current octave. You can use this feature either with external MIDI controllers or MIDI sequencers.

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1.3

March 6, 2023

This version adds BrainBud app compatibility.

Price History of In Theory

Description of In Theory

In Theory is an interval based MIDI keyboard app with more than 110 scales. It has a keypad at the bottom with the interval buttons like +2, +1, 0, -1, -2 which would change the current note. Zero means the current note, +1 means the note after the current note, +2 means two notes after the current note, -2 means two notes before the current note in the scale and so on. Above the keypad, you can toggle additional intervals in the scale for creating chord voices. You can also select the notes from an octave above and an octave below for creating rich, extended chords. You can use your MIDI keyboard to play In Theory as well. The middle C4 key on your MIDI keyboard triggers the 0 (zero) button on the app's keypad. The white notes after the C4 note would trigger the positive buttons, the white notes before the C4 note would trigger the negative notes on the keypad. You can also toggle the chord intervals with MIDI CC messages. You can set a MIDI CC number and a MIDI Channel for toggling the chord intervals from the settings menu. If you send a MIDI CC value between 0-62, you can toggle the chord intervals respectively. With the MIDI capabilities, you can also sequence the app with a MIDI sequencer app like PolyBud, ShiftBud, MelodyBud etc. In Theory has more than 110 scales built-in. You can also use the custom scales you made in ScaleBud 2 app as well. The key and scale could be changed externally from a MIDI controller in AUv3 plugin with the AU parameters. The circular display on the UI will show you where you are in the scale. Also, when you play a note, you will see the every playing note on the screen with the root note and the chord intervals. Please note that In Theory is a MIDI app and does not produce any kind of sound on its own. You need to connect the MIDI output of the app to an audio app's MIDI input. For the AUv3 plugin you'll need an AUv3 host app such as AUM, Cubase, Nanostudio, apeMatrix etc.
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In Theory: FAQ

Does In Theory offer an iPad version?

Yes, In Theory can support iPad devices.

Who developed the app?

The In Theory app was built by Cem Olcay.

What is the minimum iOS version for the In Theory app?

To function properly, the app requires at least iOS 12.0.

What user rating does In Theory have?

Users are raving about In Theory, which has an exceptional rating of 5 out of 5.

What is the category of the In Theory app?

In Theory Relates To The Music App Genre.

What’s the current version of the In Theory app?

The current version of In Theory is 2.2.

What is the date of the most recent In Theory update?

In Theory updated its app on September 30, 2024.

What is the specific date when the app came out?

The release date of the app was March 3, 2023.

What is the recommended age for the In Theory app?

This app is rated for ages 4 and up, and contains only family-friendly content.

What languages are available on In Theory?

The following list of languages is supported by the In Theory app: American English.

Is In Theory featured among Apple Arcade's game offerings?

Sorry, In Theory is not part of Apple Arcade.

Does In Theory contain in-app purchases?

Sorry, there are no in-app purchases available in In Theory.

Does In Theory provide support for Apple Vision Pro?

No, In Theory does not provide support for Apple Vision Pro.

Are ads featured prominently in In Theory?

No, ads are not featured prominently in In Theory.

Video & Screenshots of In Theory

In Theory - Interval Keyboard video #1 for iPhone
In Theory - Interval Keyboard screenshot #2 for iPhone
In Theory - Interval Keyboard screenshot #3 for iPhone
In Theory - Interval Keyboard screenshot #4 for iPhone
In Theory - Interval Keyboard screenshot #5 for iPhone
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