Bilômetro is a subscription-based Firefox extension designed to enhance the online shopping experience by providing users with real-time price comparisons and discount coupons. This tool quietly integrates into the shopping process, appearing only during online transactions to suggest better deals and available coupons, making it a non-intrusive companion for savvy shoppers.

With Bilômetro, users can easily find the best prices across various online platforms, ensuring they never miss out on potential savings. Its straightforward functionality and focus on user convenience make it a valuable addition to any shopping routine, helping consumers make informed purchasing decisions without the hassle of manually searching for discounts.