Better-deal alerts are built into the Kudos extension. If you already have the extension turned on, you don't need to set up anything else.
On iPhone
If you have the Kudos app, the extension is already on your phone. You just need to turn it on in Safari:
Open Settings on your iPhone.
Go to Apps, then Safari, then Extensions. (On older versions of iOS, go to Safari, then Extensions.)
Find Kudos and turn it on.
Don't have the app yet? Download Kudos from the App Store.
On desktop
Add the Kudos extension to your browser:
Once it's installed and you're logged in, better-deal alerts work automatically while you shop.
Still not working?
If your Kudos Wallet shows "Extension not installed" on iOS, see Why does Kudos say "Extension Not Installed" on iOS? Otherwise, reach out to us at support@joinkudos.com.