Slick!

Very good app! Its more intuitive and frankly prettier than any other graphing app Ive tried so far! It gets a bit laggy if you try to graph many or complicated animated/interactive graphs but I blame my cruddy processor for that. The static graphs load with a negligible delay.
Definitely worth five stars! All these people who say that its not great either dont know how to use it or have some kind of chip on their shoulders.

Stat. Stud. about Desmos Graphing Calculator, v2.0.1