Ulangi is a free and open-source language learning application that provides an all-in-one solution for users to learn and manage various languages. It offers various learning methods, such as flashcards, spaced repetition system (SRS), writing, quiz, and more to make learning languages easy and fun.

The app provides users with four different review strategies to review cards in both directions, making it easier for them to learn new terms and definitions. It also offers built-in dictionaries, audio support, Google translate, and image search to enhance the learning experience. Users can also add extra fields for additional information and group flashcards by categories.

Ulangi supports learning multiple languages, with over 20 languages available for users to choose from. It also offers mini-games for practicing learned vocabulary and a search engine to find created flashcards. The app is partially offline accessible and offers multi-tasking support for tablets.

Overall, Ulangi is an excellent language learning tool that offers a comprehensive set of features to make learning fun and easy. It is tailored by user feedback, and more features are coming soon. If you're looking for an all-in-one language learning solution, Ulangi is definitely worth checking out.