The program I am using on my iPod touch has been really helpful so far, but when I bring my iPod to school and try and use it with my Chinese friends, they say that a lot of it is wrong or that you don’t need one of the words it gives. I use "My Chinese Coach." is there any way that I can check the accuracy on the words that it shows? Is there another good app on the iPod touch 4g that I can use to help with my vocabulary?