kanaかな what?なに Libre and gratis1 web SRS for learning hiraganaひらがな and katakanaカタカナ. What is SRS? ˗ˏˋ★ˎˊ˗ How is this licensed? ♎︎ This may change in the future, but I'm currently going for a variant of the BSD 3-Clause license that prohibits military use. For the full license, see the license file.