Mathematical Logic is a free Android application developed by Kirill Sidorov. As the name suggests, this app is a comprehensive guide to mathematical logic. It falls under the Education & Reference category and specifically under the Books subcategory. The app provides a detailed description of mathematical logic with an easy-to-understand approach.

The app is well-structured and organized, with a user-friendly interface. It covers several topics, including propositional logic, first-order logic, and second-order logic. Each topic is explained in detail with examples and exercises to test your understanding. The app also provides a glossary of terms and symbols commonly used in mathematical logic, making it easier for beginners to understand the subject.

Overall, Mathematical Logic is an excellent app for anyone interested in learning mathematical logic. It is informative, easy to use, and provides a comprehensive guide to the subject. However, it would be helpful if the app included more advanced topics for users who want to delve deeper into the subject.