BenkyōZen

This app is designed to support your Japanese learning in a smarter way. It uses FSRS (Free Spaced Repetition Scheduler), an advanced algorithm that optimizes your review timing to help you remember more with less effort.
You can also practice verb and adjective conjugations to build a strong grammar foundation.
On top of that, the app includes a built-in e-dictionary, so you can quickly look up words and study them in context — all in one place.