I love DeckStats and many of its features really distinguish it from the competition for me!
One small issue which has bugged me for a long time, however, is that the Date Added field in collections seems to be relative to some time zone that is very distant from mine -- or something like that. I'm in the US on the east coast, and most of the time after I set a date, it displays as the day before whatever I set. It's not the world's biggest issue, but it would be really nice if the dates would actually display as I set them!
Thank you and keep up the wonderful work!