I use the saving star app. Its the easiest one, the others involve too much work. Once you have signed up and have the app, it lets you know when there are new offers, I just click on all of them and if I happen to buy it during the course of my regular spending then there is a small benefit. I do not purposely buy stuff because there is an offer, but I do end up getting a small amount every now and then. The offers are for some decent stuff, not just junk. And redeeming the money is not hard wither, I have it go to my bank account. Its worth a look, because it is mostly painless.