FutureBucks: Opportunity Cost Calculator is a free Chrome add-on developed by FutureBucks. It aims to help users make informed purchasing decisions by calculating the potential earnings they could have if they invested their money in an index fund instead. By harnessing the power of compound interest, FutureBucks interrupts the checkout process to remind users of the opportunity cost of their impending purchase.

With FutureBucks, saving for retirement becomes less complicated. The add-on breaks down the barriers that often hinder long-term financial success. It eliminates the need for cumbersome mental math by performing the calculations for the user. By clicking "STOP AND SAVE" on the extension, users are redirected to their investment platform where they can easily deposit their money. This simple action can lead to a future filled with more bucks.

FutureBucks: Opportunity Cost Calculator is a valuable tool for those looking to make more informed financial decisions. By providing users with a reminder of the potential earnings they could have through investing, it encourages thoughtful spending and saving habits.