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!

They make it sound like BIG savings, but in truth I have never saved a thing. It might say it's $15 cheaper than Amazon, but by the time you pay shipping, it's the same or more.

I like it because when I'm about to buy something Capital One popes up to tell me if available somewhere else cheaper

Great app. No issues and save me money from time to time.

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.

I have been receiving info from Capital One Shopping for more than a year. I was skeptical of their advertising promises and after reading some of the reviews posted here, even more skeptical. There is a certain travel bag that I have been wanting to purchase for some time. I searched the usual sites (Amazon, EBay, Target, Walmart, etc) looking for a sale or clearance price to no avail. Today I decided to try Capital One and see what would happen with online shopping. My thought is I can cancel my order at checkout if I didn't like what I see. Well, I'm happy to report that I saved $165! A coupon was found at checkout that gave me a 50% discount. I couldn't be happier! I purchased the bag as I know I would not find a better price. All I can say is "Thanks CapitalOne." Give it a try.

In summary: only use this app if you're willing to gamble that you will eventually get the rewards! There is no phone support, and I am not convinced that their email support is competent!

After installing this add-on, it recommended I purchase something from a different site than Amazon.com so I can save more money after cash back. I made sure the offer was activated before my purchase - the add-on indicated it was. Two months after my purchase, I still haven't received the cash back.

There is no phone support for CapitalOne Shopping - you can only email them. Regular CapitalOne credit card support will not help you with CapitalOne Shopping issues.

I emailed them about my purchase on Chewy.com and they responded that they did not see any record of a Macys.com purchase (!?). I emailed back that it was through Chewy.com and they said they still found no trace of it. I asked if they could give me credit given I have a receipt and I used the card and followed all instructions, but they have not done so. I'm afraid that I will never get my rewards...

The coupon codes also usually don't work at all.

I tested this app looking for 32" computer monitors. The results showed 1000s of non-monitor items and did not show real pricing. Also, the search results showed many items that were out of stock, in addition to showing incorrect (lower than actual) pricing, when the listing was actually a computer monitor. This app is at best a waste of time, and more likely a back door into your online purchases.

This extension does NOT effectively or accurately do what it claims -- the exaggerated claim masks what it really is: A universal tracker and data collection app for everything you see and do with Firefox. You have to provide an email address to use it! I ran a test based on a purchase I made the day before: I found a specific SSD drive on Amazon with their best price of $74.50 but then looked around and found it on Ebay for $68.00 and bought it there. So today, after installing this extension, I ran the exact same purchase test on Amazon: After the $74.50 price came up on Amazon the Capital One Shopper did NOT pop up with the price of $68.00 on Ebay (or anywhere else).

The access permissions for this extension enable it to collect your PERSONAL, NON-ANONYMOUS data on absolutely EVERYTHING you do in Firefox in real time from all open tabs and searches. Then, by its own admission, immediately sends this personalized data back to Capital One for their use and storage (and ostensibly so they can find you "like, the absolute bestest price EVER!") Sure the user agrees to this during installation, but how many people realize just how invasive it is and that it really does not do what it claims very well? This extension crosses the line into serious privacy abuse and seems like it may even present a security vulnerability to the Firefox platform.

Do not install it and open the account they require for it to operate "just to give it a try" because the second it becomes active in your Firefox it will immediately grab everything it can find and send it to Capital One with your name and email address on it. And they don't let you change the email address you give them when activating the extension.

Gives often alternatives that do save some money. Sometimes the tradeoff in the offers don't make worth the small savings offered.