Memo: ADBB Purity 99 100 Safe Delivery Whatsapp 86 13020839920

Long Term Learning Desk

It's spaced repetition scheduler. Once you start learning process you will learn 20 cards every day. Frequency of card showing depends on your answers. This mode is based on famous spaced repetition algorithm called SM-2.
Read more.

Unfortunately, this mode is available only for authorized users.
Please, sign in or sign up.
It's easy and absolutely free.