Blue Dict: English Vietnamese Dictionary is a free Android application developed by BK Translate under the category of Education & Reference. It is the best dictionary for smartphones with accurate and clear definitions, rich examples, words for specialists, grammar, synonyms/antonyms, and more. The app provides pronunciation of all the words, both common and rare, with a clear voice. Additionally, it includes an English to English dictionary, a grammar dictionary, English phrases, examples, synonyms, and antonyms. The app also offers results from other dictionaries in one search, a quick search that does not require opening the app, voice search, image search, and text translation. The app contains offline words and 3000 Oxford English words. The app is optimized for low-end devices and designed to be easy to use, with a simple flat design dictionary. It is suitable for students to look up accurate meanings, learn English vocabulary, and translate English to Vietnamese.