I have been asked many times why SIN does not have a mobile app. I am kinda ignorant when it comes to mobile apps. Keep that in mind.
SIN works just fine on my andriod phone and my tablet. Sometimes when you go to the network on a mobile device it will appear white and look completely different. If that happens all you nee to do is click on the menu icon, top left. It looks like a square that is made of three or four lines. Scroll to the bottom and click on ' enable desktop version '. And you are done.
SIN looks nearly identical on my devices as it does on my PC. If it does not for you, you did something wrong.