A functional app helps master English grammar by playing a card game.
Pupucard, English Grammar Master, consists of 25 chapters which include basic English grammar from chap.1 be-verb, chap. 9 comparative to chap. 25 If-clause. It is published as three languages: Korean, English and Japanese. Children can play a game not only with AI but also with other players up to 4. They can master English grammar by simply playing games which help them memorize English sentences automatically. Proven learning effect is that it makes your score double in a test in 30 minutes.