MatrixApp is an Android-based application developed by AV Group that allows users to solve systems of linear equations using various methods such as Gauss, Gauss-Jordan, and the method of Stile. The app also offers the ability to calculate the determinant of a matrix using the Gauss method and the Sarrus method, although the latter is only applicable to arrays of order 3x3.

The app is mainly designed for university students and professional engineers who need to perform matrix calculations in their work. With MatrixApp, users can obtain not only the result but also the necessary steps to reach the solution. The app's user-friendly interface makes it easy to use and navigate, making it a powerful tool for anyone who needs to perform matrix calculations on the go.