wordengine.jp VS.

vocabulary.com

wordengine is the fastest way to increase necessary english vocabulary.the patented v-check test identifies all the words you know and all the words you don’t know. v-check compares your vocabulary ability to standard tests and issues highly accurate estimated scores. most importantly, wordengine prepares personal flashcards just for you. word engine is the fastest, least costly, and easiest way to increase vocabulary comprehension for exams and careers. universities and companies around the world choose wordengine because professional teachers need proven results.