Decent, Could Be Much Better
First off, this app has a fatal flaw. Once you have repeated going over a list of words, it is possible to read the anwer despite it being blurred. If the answer was simply blacked out that would be a large improvement. Also, the lack of a keyboard shortcut is disapointing. A mobile option and print option, along with the prior two issues being solved would make this app a great study tool, until then, it is not worth the three dollars as you could get 100s of notecards for that price.
Dr. of Civ about
Simple Flash Cards