This is a vocabulary builder app which help study and look up SAT vocabulary. Contain vocabulary list with many important words which is use in sat exam commonly. master SAT vocabularies is not only help you master English words but also help you achieve higher score of SAT exam. Feature: ☞ Instant look up SAT words ☞ Bookmark important vocabulary, high frequency words and mark which one has master or not ☞ Offline and NO internet require ☞ Many interesting method to study ☞ Support light/dar