Lingualeo is an Android app that offers a wide range of tools and learning techniques to help users learn different languages, including English, Chinese, Hindi, Spanish, Portuguese, Russian, Japanese, German, Korean, French, Vietnamese, Italian, Turkish, Ukrainian, Polish, Dutch, Indonesian, Czech, Greek, and Serbian. The app has over 23 million users worldwide and is a linguistic super app that provides various vocabulary training, grammar exercises, thematic courses, and videos as a tool for learning.

In addition, Lingualeo offers relevant articles and books in their original language, featured collections such as TED Talks, and the ability for users to "battle" with others. The app allows users to follow their interests and not the tutor's instructions. Furthermore, users can track their progress in language learning and focus on developing certain skills such as writing, listening, and speaking. Lingualeo offers a wide selection of free content and courses, and the same account can be used for apps in the App Store, Google Play, website, and Huawei AppGallery. For additional features, Lingualeo offers a Premium version.