Nice tool. Weak implementation.

Crashes after 8 or 9 play sessions - which is OK, since I need a break by then anyway. (on an ipad...)

Only plays through one side of the headphones. This makes for some interesting experiments -- can I read code better with my left or right ear? Probably this is NOT the intended design.

The lesson selection wheel works rather poorly on the iPad for some reason.

It would be nice if the settings would remain from one session in the software to the next.

In spite of all these issues the software has already helped improve my code copying skills.

JRS LCF about Koch Trainer