iFlash is a reliable product, which is actively supported, and it has a good set of features. It is very easy to set up a deck of cards, and the software works like advertised. I have not made use of the audio possibilities myself, but it is good to know that iFlash supports that.

What I would like to request, to stimulate my appetite in learning vocab, is some graphs of recent study session scores. For Hebrew, FoundationStone (freeware!) has a brilliant set of graphs, which iFlash (which supports more languages, but has less features) does not.

Overall, highly recommended.