I had a small problem with the app, it wasn't clear to me that I had to turn TM off in order for the TMS to work. The developer answered my email almost immediately and was helpful. The application works as advertised, the only fault I find is that when I wanted to eject my external, it wouldn't eject, although TM was not running at the time. I had to turn the external off, which is never a good idea, but the data don't seem to have been corrupted (this time). If this little glitch can be fixed, I would certainly give the full five stars.