I use the app on iPad so it may be different
BUT there you can save your work...
There is a" tape library" (you touch something on the top of the "recorder")
to go there, you can name things and save etc.
There is also a tascam 4 tracker app but I'm pretty sure it is just for iPad
I know what you mean about simplicity, I have a early zoom digital
Recorder and since I got the Apple stuff it gets little use
Just so simple to lay stuff down with the various apps..
You might also want to look at getting irig it interfaces nicely with the fender app
(DR rtr recorder) and I have done a ton of work with it