O'zbek Tili is a free Android application developed by Yer.one Inc. that provides theoretical information about the Uzbek language. The application covers multiple topics such as phonetics, graphics, orthography, orthoepy, lexicology, phraseology, morphemics, word formation and morphology.

The theoretical information provided in the application is comprehensive and informative, making it a valuable resource for anyone interested in learning the Uzbek language. The application is user-friendly and easy to navigate, with a simple and straightforward interface. However, it does not include any interactive features or exercises for practical application of the information provided.

Overall, O'zbek Tili is a useful application for those seeking to expand their knowledge of the Uzbek language and its theoretical aspects. It is a good starting point for beginners and a valuable resource for anyone interested in the language.