This application calculates the GPA and stores the information. This is my first app on Android and I have published it on the Google Play too. Please find the link below for the app.

https://play.google.com/store/apps/details?id=com.gpacalculator.com&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5ncGFjYWxjdWxhdG9yLmNvbSJd