I'd like to suggest you to place Switch tab button always to be left-alligned (i think it will be convinient to touch it with a thumb finger of the left hand on bigscreens 4,3" and > -devices -- for left-handed usage), with constant customizable position of this (-> & = ) buttons. (For left & righthanded users).
Also, it will be good to make Ghisler com link in About-section clickable.

Sorry for my English.
Regards