I created this application to help other students calculate their GPA. 
*No affiliation with any University/College. 

Here is a link to the official store listing: 
https://play.google.com/store/apps/details?id=com.techseven.uoftgpanew

Here are some details from the store listing:

Want to ace that course? Want to know how bad you're failing in school?
This app is your one stop place to find out!
Features:
*Calculate your GPA(4 Point system only)
*Calculate your current mark in a course
*Beautiful UI!