I'm the developer of Zen Nihongo and one of the founders of Snow Saru [ site still under construction

I included contents according to JLPT specifications. The current focus is on kana (for beginners), Kanji and Vocabulary. Soon, I'll be adding cards for Japanese grammar as well. If you're interested, please check it out here (iTunes link). If you do have any comments and suggestions, please don't hesitate to send me a private message or a mail at . Thanks!
