Fun & learn
This app is fun because it's easy to use. The graphics are simple and pleasing but not too busy. The voice volume matches the volume control of the phone. The voice is also easy to understand. I like that after you answer it gives you the option of continuing instead of doing it automatically so you can go back and hear the word again. There are many other things I like about but I'm picky and it'd take too long to explain. The design of this app is awesome.