I’ve had this app for several months and really like it! It took a while to figure out the more creative things you can do with it, I wish there was a better tutorial. (Maybe there is, but I couldn’t find it).
I use it a lot with the “tracking” feature. I’m a drummer, so if I’m working on rudiments I’ll set it up to track 20 measures. So I can play the rudiment for 20 measures, then the tracker starts over and I switch to the next rudiment. You can use the tracker for a specific period of time (like 2 minutes, etc).
The playlist feature is cool, and you can make it automatically go to the next “song.” So you can create the song/time signature/tempo.
Once you figure out the creative pieces of it, this is an awesome app!
And I love that I bought the app for a few dollars. No ads and no ongoing monthly subscription costs!!

Get in touch with me. I’ve got some ideas. Let’s do lunch.
I’d suggest adding features to the “Automator” ie; allow us to program the tempo to not only increase OR decrease after a certain number of beats but to also be able to program it to increase AND decrease in the same sitting.. it would add another level of depth to a workout. For instance, after the tempo reaches 250bpm, have it go back down in tempo in the same or adjusted number of increments without having to readjust the settings.

Very easy to use! You can change timing and pattern very quickly. Best feature is that the first beat of the measure has a slightly different tone, so you can figure out if you’re slipping or not. Or speeding up, which is what I often do. Also, the visual is good. Little dots, lighting up sequentially. It has really helped me to move toward a steadier tempo.