450Words - Essential Words for the TOEFL-v1.2 Feautures : 1- Study 450 Words with Examples. 2- Flash Cards Section based on Leitner's system. 3- Search Section to search in words, definitions or examples. 4- Help Section to know how to work with flashcards section, etc. 5- the main style of the project changed. 6- now works on many mobile phones with different vendors and even on old devices.