Its 99 cents so its probably worth it. I'm using it and I love it. The best part of it is the sharing of preset EQs with other users.

Yes. amazing isn't it? 

Just for an update peeps, a new firmware has been released for the AK100 and it now supports ALAC and AAC. This was the ONLY reason that was holding me back from purchasing but now it seems I am sold. This is probably the first machine to literally support any music file format out there.  ...