ReThink — Pause Before You Buy by ReThink

ReThink is a mindful-spending browser extension. It detects when you reach a real checkout or payment page (not just any product page) and shows a brief pause before you complete the purchase, so you can decide with a clear head.

Works on any retailer's site, since checkout pages can appear on any domain. Requires a ReThink account with an active plan, created in the ReThink app.