This app helps you actively recall words you would like to learn by calculating the optimal time for you to recall them.
This app allows you to review all the words you have learned (on the "Learned Words" page), as well as the words you still need to learn (on the "Your Words" page).
Words you should recall will show up on page called "Recall."
You will receive an email when it's time to recall certain words.
There are five rounds of repetition, and each time you will grade how well you have remembered a word. Repetitions will reset if you mark a word as not recalled well enough, using a rating scale from 0 to 5. Any rating below 3 (0, 1, or 2) is considered "not good enough."