Math. Simple Equations is an Android application developed by Cognition Follow. It is a free educational program that simulates the solution of simple equations with one unknown argument. The app offers theory, training, and testing modes for users to explore and solidify their knowledge of the subject matter. Additionally, the program allows for multiple students to track their progress through the use of a statistics feature. The app also offers various themes to suit individual preferences.

Overall, Math. Simple Equations is a useful tool for anyone looking to improve their understanding of simple equations. The app's features and interface make it easy to use and the statistics feature is particularly useful for tracking progress. The various themes also add a nice touch of customization to the app. However, it is important to note that the app only focuses on simple equations with one unknown argument and does not cover more complex equations.