Learning the Japanese Kanas doesnt have to be so difficult! This app is free to try for 30 rounds of flash card or fill in the blank style training.
You have the ability to choose the kanas you want to train, display the kana or roman characters, enable sound help, and review your previous scores, and see which kanas you fail the most at.
I was surprised to see how fast I was able to memorize Hiragana and Katakana, so give it a try!