GRE Vocab Review app for iPhone and iPad

For tests like GRE, we memorize a large number of word meanings. We need a method to quickly review our knowledge of vocabulary during run up to the actual test. This app assembles word meaning of more than 4500 words and provides and interface to review knowledge of these word meanings. One can categorize words into three categories- Easy, Difficult and Confusing and can change the categories as and when user feels. The objective is to remember all word meanings as Easy. Initially word meaning is not displayed. One can see word meaning by tapping on the word or section header.
Note: GRE is trademark of ETS and this app or developer has no tieup with ETS.