Easy Grade Calculator

This is an app that shows you the grade for x number of questions, and it shows how many right and how many wrong. The app does contain ads, and although they are annoying, I use this in silent, and make sure that nobody can see (in case of inappropriate ads). For teachers who use this, DO NOT put it up. Rather, write down the pssible scores on a paper and put THAT on the projector. As for the usage of the app, it's to make grading faster. Not necessarily to show kids, because it's just to grade

What is this is basically about and how can i grade papers and dose it have a checking thin on it to make sure it is right

OVERLOADED WITH ANNOYING AND INTRUSIVE ADS, SOME ARE INAPPROPRIATE FOR A CLASSROOM. THIS MAKES APP USELESS****