what can i say.
many hacker is familiar with pc , but they have to adapt more with mobile because it is different platform, tool, hardware etc.
in other word it is safer in mobile than pc for challange quiz.
I can't imagine if my opponent on other end is Anonymous Hacker (i will certainly lose)
Truly agree with you @Moksh...About cheating on web browsers!
But somebody who knows that much about hacking, why will he/she take part in challenges?
As a SoloLearn web user, i truly miss out so many things!