App to Track Total Interest as Debt Accumulates or Reduces

I’m looking for an app that allows me to track the total amount of interest being paid over different time intervals (monthly, weekly, etc.) as I pay down my debt. I love the idea of seeing the impact of extra payments on my debt, like putting an extra $100 toward my credit card and seeing how it reduces my interest by $10 monthly, $120 yearly, etc.

Does anyone know of an app that can do this?

Debt Free is an app designed to help you pay off your debts. It tracks your progress and gives you motivation along the way.