One Click Tuner

This is a bit off topic for me, but I recently created an iOS Tuner app (App Store Link) after not being satisfied with the other tuner apps out there (I play guitar). It was an excuse to learn some swift/signal processing as well as design a new kind of tuner display that I think is a bit more insightful than the norm:

I’ve written a few more details about it at the app’s website.

Note

Since the original post, I’ve rewritten the app using SwiftUI.