Paydown is a free mobile app that tracks your car loans, mortgage, and personal loans — and shows you exactly when you'll be debt-free. Add any loan and instantly see your payoff progress. The extra payment calculator shows how an extra $50/month saves you real money in interest and cuts months off your loan. No download. No account needed. Open it on your phone and add your first loan in under a minute. Would love honest feedback from the Product Hunt community!