Terrific
I have been using this app for about a year. Slowing down, altering pitch on fiddle tunes in order to play them. This app is great, it never crashes, changes can be made on the fly, and it can do almost anything to enhance the learning experience. I use it on my iPhone without issues. It accesses the music library without problems and it is possible to record live music if you hear something of interest.
My only fear is that they will fuss it up and complicate a tool that works perfectly.
Bobx4 about
Anytune Pro+, v3.10.1