The main new feature is the introduction of space repetition system for the flashcards.
The implementation of Space Repetition System in Wakaru is greatly inspired from Anki.
We added automatic flash generation from studylist using templates tailored for Japanese.
You can generate flashcard using combition of Japanese / Reading / English as questions or answers.
We have also implemented some statistic like success ratio and number of flashcards to review in coming days, weeks or months. We plan to add more features on the stats side.