Nice app but...

Its a bit difficult to check/uncheck cards. Also the flipping speed is a little too slow. Its not bad for when I just start studying, but sometimes I just want to review what I already (mostly) know, and thats when I wish it would flip faster.
Suggestion: could you perhaps add an option that allows us to toggle flipping animation on/off, or change its speed.

Littelblossomz about Study Flash, v2.0.1