Big Vocabulary Vocaboly contains five books: VOA Special English, TOEFL, GMAT, SAT and GRE. With more than 12,000 words, each word contains meaning, phonetic symbol and pronunciation with decent American accent. You can select a book according to your purpose or English level.
Word Cards Every book contains eight flash cards, after you put some words into a card, you can select it to study.
Word Difficulty Level Each word can be assigned to a difficulty level from 0 to 5, the default difficulty level is 0. You can filter the word list by difficulty levels. Combined with word cards, you can easily pick up the words that you wan to concentrate on.
Multi-User support Each user has his/her own study record which is saved automatically when you quit the program.