Everything is good in your App..
But you can improve and add some this feature that helps your users alot...
1). Custom Font issue : There is Not a shortcut feature to customise different font size for different websites (Like some website look better at 80% font size and some look better at 110% font size), but their is same font size for all websites in your app.
2) Shortcut : On home page automatically lots of shortcut added, that i have been only visited on site not added them, you can remove shortcut with bookmark ( if bookmark ui is small like shortcut ).
3) CAPTCHA : When I fill captcha it didn't match always in first time, I have to refresh captcha 2-3 times.
4) Speed : Speed is good on wi-fi but it feel slow on mobile network
