Guys, does tinycards' sets ever finish, like by showing you don't need to go over them ever again?
Think about it by fighting with your "words forgetting curve". Can you (completely) stop fighting one day?
This is e.g the Memrise wiki SR algorithm: http://memrise-users.wikia.com/wiki/Memrise_Spaced_Repetition_Intervals
If TinyCards would not be implemented as a SRS, then something is probably going wrong. I am not the developer.
BTW: I guess what is even more important is to think for your training of RECALLING your "learned words", by typing the L1->L2 translation in the L2 target language!!!
Does it support something like this (instead of the translation into your source/base/native language) where you have only to read the target language and where can you eliminate stupid multiple-choice exercises for review?