Blaszok is fully responsive & retina ready. Tested on real devices iOS, Android & Windows based. We have made every effort for the Blaszok to look as good (or even better) on mobile devices then it does on desktop. It was designed from the ground up as a responsive theme.
We are using font icons to make it look good on any resolution. You have 360+ icons available out of the box, fully responsive & retina ready. For the logo you can specify two sources one for the standard resolution and one for the retina.