Show HN: I built a tool to maximize your cash back rewards while shopping (opens in new tab)

Background: If you use shopping portals like Rakuten and Capital One Shopping, you might not realize that cash back offers for your favorite store varies between shopping portals, and that these offers change every day. If you're not comparing these offers across portals, you could be missing out on free cash back rewards.

I built a search engine and Chrome extension that indexes cash back and airline miles shopping rewards offers across 8+ shopping portals. It's completely free to use.

Web App: https://getsavewise.com

Chrome Extension: https://chromewebstore.google.com/detail/mmdidpkgkknffjbnnbp...

Key Features

- Automatically searches 8 shopping portals to help you find and compare the best offers

- Supports 12,000+ online stores

- Choose between cash back and airline miles offers

- View offer history trends to see whether to buy now or wait for a better offer

It’s sort of like Google Flights for cash back deals - you’ll always know the optimal cash back portal to use to maximize your cash back when shopping online. You can use it no matter what credit card or debit card you have, as long as you shop online.

This started as an itch I wanted to solve for myself, but I realized that a tool like this might benefit other deal junkies and those who rely on cash back rewards.

I plan to add support for more shopping portals and other features in the near future.

I’d love for you to try it out and let me know what you think!