http://itunes.apple.com/us/app/free-french-tutor/id313895919?mt=8
This is a free ap for your iPod touch to study French. First of all, who doesn't like something that's free? Second of all, I like this ap also beause the reviews were all mostly positive and almost all of them recommended it. This seems like a very quick and easy way to learn or refresh your French.
http://www.frenchpod101.com/iphone/
This is a paid ap you can buy and this website offers a couple different French aps. I chose this one because it seems like it would benefit you the most if you are trying to learn French. The discription says that you can learn up to ten new words a day. This may not be true but it does offers thousands of words that are available for your learning. You can listen to a native speaker and also record your own voice to possibly compare. You can also quiz yourself with a matching game.

