The best graphing calculator around has recently had a major upgrade on Android – now you can see all your saved graphs. Get it on Google play here. For Apple: iOS apps
Maths students everywhere get this app! It’s great for younger students as it is easy to use for learning about graphs but has the sophisticated features that older students need. From simple linear graphs to polar or parametric curves – Desmos does it all!
There are several examples in the slideshows here to show you the syntax you need on Desmos if you are unfamiliar with it.
Mathematics for Students 