Doubted it, but it works.

Many other reviewers said this app helped them learn hiragana in an absurdly short amount of time. I was doubtful at first but was soon amazed by my progress. I started out knowing about 5 characters, in half an hour I knew all of them. Real time saver, especially if youre cramming.

Blueman2282 about Dr. Moku's Hiragana Mnemonics