I use Skritter all the time for learning Chinese characters. Its great to see the same powerful tool available for learning Japanese Kanji. The subscription has been well worth the price, providing full access to the Skritter website, and both the Japanese and Chinese Skritter apps. Its very easy to set-up study lists, and Ive made substantial gains in character retention since Ive started using Skritter. Theres also fully integrated support for Heisig keywords (which is the learning system Im using). Recommended for all learning Japanese Kanji.
lechuan8 about Skritter Japanese, v1.0.4