Gonift located at gonift.com is not a scam and the concept is great & the app is easy to navigate. However, it's a bit of false advertising claiming to be a "free gift" when in reality all the "gifts" I've been offered were simply discounts applied through a promo code at checkout, where you actually have to pay the difference. So you select your "gift" & are redirected to that website, select what you want, at checkout apply your promo code & pay difference. Not free. And choices are VERY LIMITED.
Also, the "gifts" have just been hooks to get you to sign up for a monthly subscription of something. You name it, there's always a triple $$$ string attached. I got a nift for a "free" razor trial kit which I would have actually have liked to try, but the catch was that you had to sign up for monthly delivery before you even tried it! The category system is irritating and a waste of time. It can never find something useful.