Is there a mobile version of this app?

no sorry no app. Wouldnt be too good anyway because you would need a wifi connection to get the full potential of this site

Zegreos is right that's why there is an APP link on the Calc home page.  

See that's why you got a 48% on the networking test.

I know, I know, you said 84%, but you have little dyslexia, so I corrected it for you. 

Yes there is an app for your android phone.    

Anon, I think it is you that has dyslexia !!  

Or perhaps it is just CRD    (Chronic rudeness disease)!   You should get that looked at!