Capital One Shopping

Install Capital One Shopping on your iPhone and instantly unlock smarter shopping. The app runs quietly in the background—scanning for coupon codes, comparing prices across thousands of retailers, and notifying you of better deals or price drops. Earn “Shopping Rewards” while you shop online and redeem them for gift cards of top brands. It’s free, works with any credit card (no Capital One account required), and puts savings back where they belong—your wallet.

Automatically apply coupon codes for free - it's kinda genius. It takes seconds to add Capital One Shopping and works with all major browsers.