Grqaphing offline calculator for Android

[Apeirogon]

Can someone recommend some good Android graphing calculator which able to draw graphic of functions like y = x or z = xy without constant connection to the internet?
I have checked several in Playmarket and they all or unable to draw graphics without internet or lack 3D graphics support.

[Caligari87]

Take a look at MicroMathmatics Plus? I haven't used it but it looks comprehensive and powerful with no internet permissions required. It's like $1.49 on the Google Play Store but free on F-Droid (not "warez"). Also open-source too.

[Apeirogon]

Hmm, well it work....kinda. It draw graphics only in (custom) specified range, and its impossible to move graphic in preview window.
Its possible to redefine range but for simple moving/zoom in/out its too much.