Calculus X: College and AP Calc Test Prep and Tools

Grade A videos! Dev also gives very very quick response if you have any issues. I didn't turn my phone off silent so even though the volume was up it still didn't play any sound. This is not a movie theater so take your phone off silent lol

When the school year first started I was following my class all right, but then things got harder and my grade started dropping. Since I downloaded this app and started using it four to five times a week my grade has been improving and I've been understanding the material much better.

I'm taking calculus right now and I've got to say that this is by far the best calculus app on the App Store. It is very thorough and precise yet the content is packaged in a way that makes it approachable and easier to learn than in my lectures. I highly recommend this app it is definitely worth five dollars!