Zungzi is a flashcard app to learn up to 5,000 Chinese words on the Apple Watch. It uses a spaced-repetition algorithm to repeat vocabulary words that you attempt incorrectly more frequently than the words that you know well.

TokeiTango is a flashcard app to learn over 9,000 Japanese words on the Apple Watch. It uses a spaced-repetition algorithm to repeat vocabulary words that you attempt incorrectly more frequently than the words that you know well.

A notebook app for your to work through your Japanese textbooks in, or to practice writing messages and using the in-built translator and dictionary to check if it's correct before you post.