Why Apps Help
Paying off debt isn't complicated in theory — put extra money toward high-rate balances. In practice, managing multiple cards with different rates, due dates, and minimums creates friction that leads to mistakes or giving up. Debt payoff apps remove that friction by automating strategy, tracking progress, and optimizing payments.
Tally
Tally is a credit card payoff app that extends you a lower-rate line of credit to pay your cards. It manages all your card payments, automatically distributing money to minimize interest. The catch: you need decent credit to qualify, and Tally charges interest on their line of credit (though it's typically much lower than card rates). Best for people juggling multiple high-rate cards who want full automation.
Debt Payoff Planner
A straightforward calculator app that models snowball and avalanche strategies. Enter your debts, choose a method, and it generates a payoff timeline with a month-by-month schedule. No automation — you still make payments manually — but excellent for visualizing the finish line. Free with ads, or a small one-time purchase to remove them.
Undebt.it
A web-based tool with the most customization options. Supports snowball, avalanche, and hybrid methods. Lets you add extra payments, model what-if scenarios, and track progress with charts. The free tier covers most features. Best for people who want detailed control and scenario modeling.
How to Choose
Use the Debt Payoff Calculator on DebtCalc to determine your optimal strategy first, then pick the app that matches. If you want hands-off automation, Tally. If you want detailed planning, Undebt.it. If you want a simple visual timeline, Debt Payoff Planner. The best app is the one that keeps you consistent. A fancy tool you ignore after a week isn't worth the download.