Well I finally took the plunge and bought an iPod Touch. Why? Because I needed a Japanese dictionary and the iPod Touch seemed to me to have the best array of options. Not only do I get an iPod with all it’s potential, but I also get a 電子辞書 (electronic dictionary). A much better deal than those dictionaries designed with native Japanese speakers in mind.
I bought Japanese by codefromtokyo and so far I am very pleased. It uses the same free dictionaries that many Japanese English dictionaries use, so that isn’t its selling point. The selling point is the implementation. First of all it has several handy lists. These lists range from proverbs, to expressions, to counters, to JLPT (Japanese Language Proficiency Test) vocabulary. Those are nice. But the really nice part is when you get into the dictionary itself. Neatly displayed are the On and Kun readings, the radical, a stroke animation (though not for every Kanji), a translation and compounds using the Kanji (where applicable). You can add any word to your vocab list.
I have only two criticisms. The first one is more a small annoyance. If you leave Japanese it won’t remember where you were when you come back. Not ideal, but not terrible. The second is that you can’t really do anything with the vocabulary lists. However, on the developer’s there is a email address and a note asking for suggestions. I sent one saying that flash cards make from the vocabulary list would be useful and within 24 hours (much less actually) I got a response that it was already in the works.
Japanese is worth buying. The developer is active and responsive and the application is well done. Go buy it.