If I can do anywhere near that with just 5 devices, then I won't bother running more than that just in case. That way I also don't have to bug the kids to run their devices
I am not going to tell you that it is as easy as letting them run...Perk has its issues and I have to work to get this much. Sometimes the desktop/laptop can run for hours...somedays it crashes has to be started up MANY TIMES. As for the apps...lots of commericals are popping up that freeze or you have to manually advance. I love the APP trailer...I earn about 1000 points from 2 devices each day. I am wanting to add a few more devices to that mix.
From the Perk TOS it seems that anyone age 13 and over can use it, so would there be a problem with setting up DD13 an account and letting her run her own Perk apps while I run mine. Even though it would be slower for her, I know she'd be super excited about any GCs she earns.