Streamline English is a free Android app developed by Pham Gia Nguyen Phi, designed to help users learn English with ease. The app falls under the Education & Reference category and offers a range of features to enrich the learning experience.

The app includes two versions - New American Streamline with an American accent and Streamline English with a British accent. Both versions consist of three books - Departures, Connections, and Destinations, while the Streamline English version also includes a fourth book called Directions. The app offers instant translations and has English-Vietnamese and English-English dictionaries. It also features a vocabulary quiz, grammar notes and quiz, and a crossword puzzle. The app is available for free and can be downloaded from the Google Play Store.

Overall, Streamline English is a comprehensive app for learning English, offering a range of features to help users improve their language skills. The app is easy to use and provides a fun and interactive way of learning English.