An English learning app for iOS?

Question

iOS

Tell me, please, an application for memorizing English words. I learn English by reading books. I write down new words in Yandex translator. Then I teach and check on the cards (there is a function to learn words). But the cards are shown only as they were recorded. If recorded in English, fly out in English. If some application where you can invert words?

Answer 1

The best duolingo but if you are above intermediate then pass by.

Answer 2

MemoWord It is
very convenient to save words-phrases in the application, and a lot of settings on how to learn - cards, by ear, spelling - and everything is configured as convenient.