First release.
Ten chapters of hiragana, free. Katakana is an optional unlock, and its first chapter is free too.
Every word arrives as a picture painted for it and a voice reading it aloud. You answer in kana, on the 12 key keyboard your phone already has. Romaji always counts.
Himari, Sora and a fox called Kon teach hiragana. Rin and Hiro teach katakana. Kanji opens as your reading grows.
Nothing leaves your device.