Disionáriu Tetun is an official Tetun dictionary application developed by the National Institute of Linguistics (INL). It is an offline application that does not require an internet connection to function. The application allows users to search for words and find synonyms, as well as view complete definitions for each word in the Tetun language.

The user interface is simple and easy to navigate. The search bar is located at the top of the screen, and users can type in their desired word to find its definition. The definitions are thorough and provide a complete understanding of the word's meaning. This application is a great resource for anyone looking to learn or improve their Tetun language skills.