Dictionary Includes following features

Auto detection of English and Greek Words
Synonyms, Antonyms, English sentences with Examples
Categorised by verb, noun, adjective and adverb
History and Bookmarks
Comprehensive word list which is synced with searching
Important word list which includes very important words for competitive exams
MCQ Test which can be picked from history, favorites, common database and question types can be picked from meaning, synonyms, antonyms and grammar
A Quiz with lots of level which has a circular visibility of missing word
Add/Update new words
Backup and Restore options of bookmarks and history