I LOVE this app. I have been using it on both, my iPhone and iPad, and it is incredibly efficient. I have not tried other かな (kana) apps because I have not had the need. Everything I need is here including continuous support for new Apple devices. I love the way it is uncluttered and it focuses on what I want to learn: kana. The only things I could point out that I am not too fond of are that the kana animations and the font type style are not the same and that the new test is really slow paced—maybe it was done this way on purpose? Still, this is a serious, superior app and it deserves its five stars nonetheless. ありがとうございます。
M. Eelio about iKana - Hiragana and Katakana, v2.5