I, also, haven't played with Windows Mobile, but, as far as Japanese goes, I've been suffering on Android for a couple of years. There's an app called Kanji Recognizer which is a dictionary for hand-drawn kanji but, like iOS, it's not very forgiving with bad stroke order, which, if you're studying with RTK, that should not be a problem. This is not a bad app, otherwise.
However, as far as dictionaries go, Android is behind iOS by a country mile. I've used mostly JED and Aedict, and they're both highly suspect. Searching for conjugated verbs is hit-or-miss. Verb results, once found, may or may not be missing conjugations. There are other little problems. Like prink said, they just feel clunky on Android. If someone knows of an Android dictionary that's any better than the ones I cited, I'd love to hear about it.
I am not an iOS fan at all, but I had to get myself an iPod Touch just to have access to iOS's Japanese dictionaries. Kotoba (which is now called imiwa) is free and perfect for 9 out of 10 things you're trying to look up. Midori, which is a paid dictionary, has the option for hand-drawn searches, as well as searches for proper names, which is pretty useful.
Sorry if I strayed off topic.
-Tom
Last edited by TomTomHatesCats (2012 October 09, 12:56 am)