GU Not Hesaplama is a free Android application developed by AybSoft that helps Gümüşhane Üniversitesi students calculate their grades with ease. The app is specifically designed to calculate the grades of students based on the university's standard regulations. It is created by Ömer Karakoç and Kubilay Murat Özer, both students of Mathematics Engineering.

The app's interface is straightforward and user-friendly. It allows students to input their vize and final grades, and in return, the app provides them with the probability of passing the course in letter grades. The app uses the standard formula of 40% vize and 60% final grades to calculate the overall grade.

In conclusion, GU Not Hesaplama is an excellent app for Gümüşhane Üniversitesi students who want to calculate their grades with ease. It is simple, user-friendly, and free to use.