Why the fucking hell do you need any of these?!

Yup, I have none of them, and I still get a pretty good deal.

Most of my spending is at Costco, and they send me a paper ad once/month, which I'll go through and add relevant stuff to my list (in a separate app). But even if I don't get a discount, their prices are still better than most (e.g. eggs are normally $2.50 or so per dozen, whereas the grocery sells them for $4+). If I'm going to spend more than normal, I'll check a few sites before going out (or ordering online), and sometimes I'll ask the store clerk to price match to avoid multiple stops. The one place I have an app for is on my old phone, and it's for Target because they actually have decent sales sometimes. I don't check very often, but I will when I'm going to go buy a bunch of gifts for birthdays or holidays or whatever (and again, I'll check multiple sites first), and I use the 5% off w/ the Target debit card.

I literally don't bother with any loyalty programs. My grocery store's loyalty program isn't needed for discounts, it's only for a discount on gas at some gas station I don't go to (and isn't even next to the store). There's another with a better loyalty program (they have their own gas stations), but they're further away and it would cost me more in gas to go there than I'd save.

So if we need something, we'll look for coupons or whatever before setting out, we don't use an app or loyalty program. I'm pretty sure we end up wasting a lot less money this way.