It used to work perfectly. But now it no longer works. It either closes after signing in or just doesn't load and gets unresponsive after signing in. Update: It works on my Amazon fire tablet, but still does not work at all on my smartphone. Same version on both devices. Problem though, I can't take my tablet everywhere, there is no wifi on it when I am away from home or a wifi hotspot. So the app is useless if it isn't going to work on a smartphone.