Subtraction and Addition is an educational application available on the Android platform. It is free to use and is designed to help children learn basic math skills, specifically addition and subtraction. The app is compatible with Android 9.0 and has been developed by Poltro.

The interface of Subtraction and Addition is simple and user-friendly, making it easy for children to navigate and use. The app provides a range of exercises and tests to help children practice their math skills. It also offers a progress tracker, allowing parents and teachers to monitor the child's progress and identify areas that need improvement.

Overall, Subtraction and Addition is a great tool for parents and teachers who want to help children develop their math skills. Its simple interface and range of exercises make it an effective and engaging educational app.