It horrible, I've been trying to read a document on google for 30 minutes now. But every 5 seconds I get harassed by their stupid ad. Every 5 seconds, even after I downloaded the app and did everything I was supposed to do. I can't read anything I'm trying to read when I'm constantly trying to get out of a stupid ad that pops up every 5 seconds. And it's the same ad! Ugh!