- Vocabulary Builder is a powerful app with a perfect class and game room to help build your vocabulary. It’s the best vocabulary app -Comes with a perfect classroom to help build your vocabulary. Your progress is tracked and persisted. -2 Effective test modes: Multiple Choice and True False with auto correction -Comes with fun games and a handy dictionary search feature - Helpful for students of GRE, GMAT, SAT, ASVAB, IELTS. – Has a track record of over 4000 words that appear often in these tes