Từ điển Hán-Việt Việt-Hán is a free Android app developed by FanZung Hán Nôm. This app is categorized under Education & Reference and provides comprehensive dictionaries for both Hán-Việt and Việt-Hán. The Hán-Việt dictionary is based on Nguyễn Quốc Hùng's version and covers around 15,000 single Hán characters, not to mention compound words. On the other hand, the Việt-Hán dictionary includes approximately 20,000 words.

The app's interface is simple and user-friendly, allowing users to easily search for words they need. The free version of the app only provides access to the two dictionaries mentioned above, but users can add other types of dictionaries to the software template. Overall, Từ điển Hán-Việt Việt-Hán is an excellent choice for those who need a comprehensive and reliable dictionary app on their Android device.