GeoGebra Classic

Geometry is way cool! and this app's drawing interface is more congenial than Geogebra's stand-alone geometry app. On the other hand, CAS input with this app's on-screen keyboard is extremely difficult, and it doesn't respond to a hardware keyboard.

This app does exactly what it is supposed to do. It is a little laggy, but not so much that it disrupts the experience. The buttons would be far too small on a phone, but on an iPad, they work just fine. All in all it seems like a port from a computer program, which is fine considering what it can do.

I dont really understand why and how this app is for free, though I am not complaining. I mean, the ability to tikz on iPad, amen to that. Yeah yeah, it has bugs here and there and sometimes it is extremely frustrating, although if you save often, which should be your religion in using any sort of productivity app, you wont lose much. I like the Mac Version as well, though I wish they continued Geogebra 5 for Mac’s interface rather than the iOS interface.