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In Theory - Interval Keyboard by Cem Olcay
https://apps.apple.com/app/id1667984658
Description:
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.
Details:
Universal: Yes
Minimum OS version: 12.0
Rated: 0 based on 0 votes
Comments
Awesome. Always Cool to see another @cem_olcay app.
Thanks for the video, but I still have very little idea of what's going on
Hi all, In Theory is an interval based MIDI keyboard app, inspired by the eurorack module Eventide Misha. You can basically play through the notes in a scale with the keypad buttons like +2, +1, 0, -1, -2 etc. where,
The 0 is the current note,
-1 is the note before the current note,
+1 is the note after the current note,
-2 is two notes before the current note and so on.
So basically you can go through the scale just keep pressing the +1 button.
You can also play additional intervals from the Chord Intervals section above the keypad for creating the chord voices. You can add intervals from the current octave, an octave below and an octave above as well. With that, you can create extended chords easily.
You can use your MIDI keyboard to control In Theory, which means you can sequence it with a MIDI sequencer app.
The middle C4 key on your keyboard is the 0 button,
the white keys after the C4 key is the positive increments,
the white keys before the C4 key is the negative.
You can toggle chord intervals with MIDI CC and you can change key/scale with AU parameters too.
https://keybudapp.com/intheory
https://apps.apple.com/us/app/in-theory-interval-keyboard/id1667984658
Let me know what you think about the app!
Have you considered a walkthrough video. Even better, what about a demo period?
Yeah, demo videos will come out. You can checkout the eylvy's video above, just press the buttons and that's it, it's not a complex app like all my other apps
I also tweeted about it last week with a video as well:
Cool, but I feel just what I felt when the Eventide Misha was released...I understand what it does, but I have no idea what to use it for...
There are lot's of use cases!
Oh and forgot the mention:
That's useful - would probably benefit you to add that to the appstore description Cem!
The intervals approach is a very good idea for the wider utility and long-term application of theory, beyond this app. But neither of the above videos does that concept much justice.
Would buy-to-demo if I didn’t have so much other stuff on my to-learn list. Until then, perhaps an SFM tutorial or a Gavinski walkthrough
might be more persuasive.
Hmm, now that's interesting...how would you set that up?
It’s very good when devs make their own demo vids - even if they just share privately with YouTubers before release. There has been a flood of apps recently, and no-one except maybe Doug has the time or motivation to cover all of them. Devs making vids on their own YouTube channels is useful, though these will generally never get the same traction that a dedicated iOS music app review channel with a decent following would get. Devs publishing apps that would benefit from a review video on release would do well to remember that they always have the choice of asking a YouTuber whose style they like or whose audience fits their niche if they would be interested in doing a sponsored video.
Man it's very hard to make a tutorial video! I was working on this 5 min tutorial for the last two and a half hours with recording, editing and uploading lol The amount of work you put to make those are incredible (gavin, sfm, doug and everyone 🙏).
It has a very long jam at the end of the video, I think you'll see the real potential of the app right there!
Nice, will check it out - and yes - for most people anyway, making tutorial vids is a lot of work, between getting familiar with the app, coming up with stuff that shows off properly and musically what it can do, making the actual video, in the case of people like Jakob, doing a lot of editing work, multiple takes often to get something right, then doing the text and thumbnails, posting to all the various Facebook groups etc. interacting with commenters etc - and in most cases for a pittance that is seriously not worth the time involved lol. So yes, it is good when devs have a go at making these vids then realise, damn, this is actually stressful and hard work at times. Of course there are fun aspects to it as well, otherwise no one would stick with it. Nevertheless, YouTube is littered with the graves of channels people started before realizing, no, this is madness, I should be doing something else with my time 😂👍
I just want to know why you didn’t name it “In Theory Bud”…
Yeah...I get the no-time-for-it-all thang. Was only really dropping a hint, just in case.
Anyway...just in case it wasn't already understood, we all appreciate what you and all the other Youtubers and forum-members do to better our understanding of this software.
Thanks for that. It really is pretty simple then to get some interesting results
Thanks for the video @cem_olcay! Now I understand how it works...
hahah, I could've gone with TheoryBud, but liked the "In Theory" pun better
The bud apps are more deeper apps and non-buds are more experimental. They are equally fun though
It's incredible to think about that this is my 15th AUv3 app, and I've got a lot more ideas, for both bud and non-bud apps.
I'll keep them coming as long as I've got your support!
The new version is up!
Cool! The relative approach reminds me a bit of The Samchillian.
Sfm tutorial:
Beat me to it
The new version is on the way!
Great! Little suggestion Cem - What about adding velocity sensitivity to the pads? Press lower, velocity is lower, press higher, velocity is higher?
Will this set the "0" key to that note as well? That would be really convenient
Yes, it sets the 0 key.
It's actually way better than I thought because you can actually PLAY the circles, it's almost like a new kind of instrument thing and its soo much fun 🤯
Check this out:
That's really cool! I wonder if anyone else would find it useful for the key on the keyboard to "light up" or some way of of knowing what interval is being played from the circle. Likewise, would anyone have any use for displaying the label of the interval as in Minor Second, Major Second, Minor Third, etc, etc.
The reason I'm asking is that last night, I was using the In Theory keyboard along with the Music Theory Illustrated ios app to try and figure out what intervals were being used by a singer in a group of songs I like. I would hit the keyboard, and then count the semi tones in the other app to get the name of the interval (cross checking the notes too).
Would it be a simple matter of adding a label along with the interval number in the keyboard? I guess I could just stop being lazy and memorize it.
I don't want to ask for something that one else wants.
The new version is live!
A few years ago I worked with a developer to make this:
https://www.kvraudio.com/product/instascale-by-w-a-production
I supplied the ideas, he did the hard part. 😀
Seems like a similar thing, obviously based on the samichillian or however it’s spelled.
A a buttons to add to yours that is indispensable:
Return to “root”
So you can do a run up/down, then return to the root of the scale.
Of course that also then leads to the need to have buttons to alter the root (8ve up/down, etc)
My use case was to be able to jam solos and Melodie’s on drum pads. This will work nicely on iPad!