Unlike flashcard programs that Ive used in the past to learn kanji, this program actually keeps me awake. Its the only form of studying I can do for more than an hour straight without nodding off. It feels like a game. The only downside on this app is the price, $15/month is just too much. If you get the yearly subscription though, its $100 which is something Im more willing to stomach. Also, theres always iTunes gift cards getting discounted every other month or so from various retailers. You can usually find them for 15% off if not more. So if youre cheap like me and wait to get a discounted iTunes gift card before subscribing for a year, you can essentially get it for $85, so around $7/month.