CardPointers VS Sift

This is very nice, might I also recommend: Cardpointers. I am not affiliated in any way, just a satisfied user. They also have a Cardpointers Reddit. The developer is very active on that reddit. Source: about 1 year ago

Shoutout to the CardPointers app and browser extension. You just log into your CC account and it’ll detect you’re on a banking page and add all the offers. Source: about 1 year ago

Hi all, I'm Emmanuel, the indie developer who's been working on the CardPointers app which launched right here on r/CreditCards almost exactly 4 years ago, and have been super busy the last few months adding in all of the most-requested features from y'all -- thank you so much for all of the awesome feedback! Source: about 1 year ago

I trialed CardPointers which sounds like part of what you’re looking for. It was good for credit card rewards, but the yearly cost for Pro didn’t seem worth it to me. I already have a general grasp of which credit card to use though. Source: about 1 year ago

Hi all, I'm the indie developer making the app CardPointers, which I launched right here back in 2019 to help users know which of their credit cards to use to get the most points or cash back on every purchase. Since then it has launched on every platform, with Android in January. Source: over 1 year ago

They may be using something like Sift for security checking and something of yours was flagged. Source: over 1 year ago

But sorry to break it to you, this has been done at a really large scale already although most consumers are not aware. One big player here is https://sift.com/ Almost every major retailer uses their service exactly for the reasons you mention. Source: almost 3 years ago

Reddit, for one. A pretty big list on their homepage. Source: almost 3 years ago