Wilsonic 4+

As someone who has learned a lot about theory in the past, I'm confused by a lot of this. However, It's very easy to use. It didn't take long to understand that the notes are spaced out in a series depending on the mode selected on the top left portion of the screen. The layout could stand to be a little more visually compelling, but it's self explanatory as far as playing a note goes. Some of the text is too small to be read. It would be nice if there was information about each of the different modes, whether that be the historical context, some sort of description explaining the structure, or something else to help a user wrap their minds around what exactly is going on here. I can tell by my ear that a lot of these structures are distinguishable from the 12 tone series, but it would be nice to know how they're different and what I could do to replicate some of these scales outside the app.

The app functions very well. Several of the features make it very easy to play music in just intonation by making it much easier to visualize just relationships than on a tempered keyboard, where you have to remember what ratio you tuned each interval to (although I'm used to that). I love being able to play compositions I wrote in JI without the intervals being completely out-of-tune and homogenized to one of only 12 irrational intervals. This app is mostly designed to demonstrate musical concepts that Erv Wilson studied, but it ended being a helpful tool for sampling music in just intonation as well.

My one wish/suggestion would be that it can be used with my synths and pianos. It would be interesting to check out other frequency possibilities using this app and other piano apps.