If you're serious about learning vocabulary, this is the only app to use. The easiest, funnest, fastest way to master vocabulary. How is Sat Center like a great tutor? * It gets to know you. GRE Center offers memo function which can remember the words you need to review. * It knows it's stuff. more than 5000 words. Hand-picked by GRE tutors and each can access a detail explanation on Google or Merriam-Webster . * It makes learning fun and easy. Better UI. Smarter definitions and usage examples. Addictive quiz mode. * It makes sure you really learn. This quiz mode is serious beautiful. Lots quiz are offered. Description: * 5000 words, chosen based on data from forty years of past GREs. * Search function is enabled . * Fun, addictive quiz mode. * Study mode with definitions, google and Merriam-Webster explanations. * beautiful flash cards show. iTunes linkļ¼http://itunes.apple.com/us/app/gre-center/id391344878?mt=8