Im a physics major in my undergrad, and when I saw the free version of this app I downloaded it instantly. I loved the app, so I wanted to see how much the full version was. When I saw that there was an integral table in the screenshot above, I said "shut up and take my money." This truly is a reference, there is an absolute TON of information here. Very good job.
laserNutz about Math Ref, v2.3.4