THE MOST ANNOYING BROWSER ADD-On EVER!! (it also slows down Firefox browsing)
Whatever savings might be earned are easily offset by the annoyances and slow check-out process. It's just a scam to be able to track your purchases and sell that info to retailers.

The pop-ups are very annoying. The majority of the time the pop-up will appear in a bad location, blocking buttons on the main page I am browsing, and there is no way to close the pop-up so I just have to wait for it to automatically close.

How does it work? I've installed it, ticked all option checkmarks, just to make sure to see it at least once while browsing Amazon and trying this addon... But nothing shows up on Amazon Canada, not on product pages, not on the cart page, not on the checkout page... It simply doesn't work, hence it resolves to a Web spider lurking behind you wherever you go or you buy on the web. Removing!

Always says you have the best price, never anything better

Extension has never worked since before capital one bought it from wikibuy. Promotions DON'T WORK, Coupons DON'T WORK, and worse is that contacting Capital one about the problems with their app DOESN'T WORK either. Samuel L. Jackson is awesome but this Mother F$^%#@& Capital One Shopping app DOESN'T WORK or do anything but waste your time.

This add-on launches many requests without any user interaction if it detects a coupon code section on a page. Sometimes it'll roll through as many as 20 different codes, applying each of them to determine the amount saved. Often times this automatic runaway process straight up breaks sites or shopping carts by triggering rate limiters or overriding manually-selected discounts/affinities. The settings are - I believe - somehow managed through the capitaloneshopping web site, but it is not at all clear what settings will change what behavior in the add-on. If the Capital One name were not tied to this add-on then I would instantly disregard it as malicious. The links section here all point to generic web pages that are not at all related to the add-on which frankly behaves like it's compromised.

It interferes with the Lowes.com website. Besides their coupons or savings don't add to much after all. I will be removing it.

I have had this for years and as far as I can tell it has never ever actually saved a dime. Claims to find a discount but never ever actually applies one.

I cannot get past "Let's get Started". Won't allow me to put UK down (just USA and Canada) and won't accept my postcode. Useless. Am uninstalling.

This is a farce!!! I had order in at Amazon and Capital One did NOTHING to apply any codes!

The app does not work.

I uninstalled this app because it was useless and I am STILL getting pop ups or it, and not just on Firefox where I added it, but ALL of my browsers! AVOID THIS AT ALL COSTS!

well it saved me over 40$ on a samsung ontop of my cards cashback.

apparently im the absolutely only person who cant access the rewards /account section of this webpage. doesnt matter what device/browser. there is no banalance of my rewards at top right cornerif i click anythin g account related its a perpetual cycle of login click booted out,

Can't sign in using google or facebook and they force you to make an account so they can spam you. Eat a fat one Capital One.

This addon will find valid coupons from time to time. However, it will automatically apply coupons any chance it gets and you have ZERO control over the behavior. Have a nice 25% off coupon? Awesome! This widget will overwrite it with an expired, invalid, or 5% off coupon automatically as you check out, and automatically hose your purchases. PITA to deal with this plugin and keep correcting it's unwanted automated behavior, on a slow system or connection.

If you use this app, then make sure you spend a little time searching for a better price elsewhere for an item on Amazon that this app says is the "Best Price." My experience taught me that most of the time there are lower prices for the same item than on Amazon, and Capital One Shopping app doesn't find them (plus, it mostly checks only eBay prices). Try it, you'll see.