Version history
In Theory - Interval Keyboard
53
ASO score
Text
77/100
Reviews
0/100
Graphic
60/100
Other
0/100
App Rating
5
Votes
7
App Age
2y 10m
Last Update
Sep 27, 2024
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Rating
|
0
|
4.58
|
|
|
Number of Ratings (Voted)
|
0
|
577.2K
|
|
|
App Age
|
2y 9m
|
8y 3m
|
-66%
|
|
In-app Purchases Price
|
$0
|
$40
|
|
|
Update Frequency
|
442d
|
30d
|
+1 386%
|
|
Title Length
|
29
|
25
|
+16%
|
|
Subtitle Length
|
28
|
27
|
+4%
|
|
Description Length
|
1 956
|
2 755
|
-29%
|
|
Number of Screenshots
|
819
|
1235
|
-34
%
|
|
Size
|
23MB
|
226MB
|
-90
%
|
Category Ranking in United States
7 days
Last 7 days
Last 30 days
Last 90 days
Last 180 days
Last year
| Top | Dec 06, 2025 | Dec 13, 2025 |
|---|---|---|
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No results were found!
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| Top | Dec 06, 2025 | Dec 13, 2025 |
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No results were found!
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| Top | Dec 06, 2025 | Dec 13, 2025 |
|---|---|---|
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No results were found!
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| Top | Dec 06, 2025 | Dec 13, 2025 |
|---|---|---|
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No results were found!
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Ranking Keywords in United States
| Keywords | App Rank |
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Analyze this and other apps using Asolytics tools
Text ASO
Title
(
Characters:
29
of 30
)
In Theory - Interval Keyboard
Subtitle
(
Characters:
28
of 30
)
Music theory based AUv3 MIDI
Description
(
Characters:
1956
of 4000
)
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. }
Read more
Other
Additional Information
Version history
2.2
Sep 27, 2024
This version adds an internal polyphonic sampler with piano sound to the standalone app.
2.1
Sep 02, 2024
This version updates the support section on the settings menu.
