Another easy GPT app is Checkpoints. You get points for "checking in" at local businesses and scanning products (similar to Shopkick) but you can also earn points by watching videos. I'll come right out and say that it's a slow earner, but I have an old iPod Touch that can't run Perk apps and can only run 4 of the 6 SB apps. So, when I'm done with SB for the morning, I switch over to Checkpoints and let it run. One point per video takes a long time to add up, but they have Target GCs ( 3,375 pts. for a $10 GC) and they deliver electronically. You can also run those videos on up to 10 devices, so if your Perk farm is pooping out, you can switch some of those devices over to Checkpoints until things get better on Perk.