Even though KanjiBox seemed to work just fine with early beta releases of OS 3.1/3.1.1, the final release version of Apple’s latest OS has broken compatibility with KanjiBox. As a result, you might experience some crashes with the app after updating your iPod/iPhone. A bug-fixing update has been submitted last week and should hit the store within a week or two (Apple willing, as usual).
Thanks for your patience.
Update: the application was just released on the iTunes Store (congrats, Apple, you are down to “only” a week waiting time for update reviews!)