Best Interest Calculator Debt Apps

246+ iOS apps curated and reviewed

4.3 avg rating
20 free apps
Updated September 2026

Out of 246+ interest calculator debt apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Interest Calculator Debt Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Loan Calculator - Debt PlannerLoan Calculator - Debt PlannerFree4.6★ (22K)YesYesSep 2026
2Loan Calculator‰Loan Calculator‰Free4.9★ (105K)YesNoSep 2026
3Debt Payoff Plan CalculatorDebt Payoff Plan CalculatorFree3.4★ (135)NoNoAug 2026
4Changed: Automate Debt PayoffChanged: Automate Debt PayoffFree4.6★ (5.5K)YesNoSep 2026
5National Debt ReliefNational Debt ReliefFree5.0★ (12)NoNoSep 2026
6Loan Amortization CalculatorLoan Amortization CalculatorFree4.8★ (639)YesYesSep 2026
7Debt Snowball - Payoff PlannerDebt Snowball - Payoff PlannerFree4.7★ (1.3K)NoYesSep 2026
8Debtor Debt Pay Off CalculatorDebtor Debt Pay Off CalculatorFree4.8★ (44)YesNoMay 2026

Top Picks for Interest Calculator Debt

Loan Calculator - Debt Planner#1

Loan Calculator - Debt Planner by ChuChu Train Productions

Mortgage, Car, School, Payday
Editor's Choice
💰 Finance
4.6😐(22K ratings)
FreeAdsIn-App Purchases
Loan Calculator - Debt Planner screenshot 1
Loan Calculator - Debt Planner screenshot 2
Loan Calculator - Debt Planner screenshot 3
Loan Calculator - Debt Planner screenshot 4
Loan Calculator - Debt Planner screenshot 5
Loan Calculator - Debt Planner screenshot 6

This app helps you understand the true cost of loans and mortgages by revealing total interest paid and payoff timelines. It allows for scenario comparisons, extra payment analysis, and detailed amortization schedules. Visualize your debt journey with graphs and access bonus calculators.

What We Love

  • 👍 Easy to use
  • 🚀 Quick calculations
  • 💡 Helpful for financial decisions
  • 🔒 Secure app

Room to Improve

  • 🔍 Lacking advanced features
  • 💸 Excessive ads
  • 🐛 Bugs and crashes
  • 📵 Difficulty disabling ads
Loan Calculator‰#2

Loan Calculator‰ by Tim O's Studios, LLC

Simple Loan Calculator
Strong Contender
💰 Finance
4.9😊(105K ratings)
FreeAds
Loan Calculator‰ screenshot 1

Easily calculate loan or mortgage payments. Simply input the loan amount, repayment term, and interest rate to get your estimated monthly payment.

What We Love

  • 👍 Simple and easy to use
  • 🚀 Straightforward and intuitive
  • 💡 Accurate loan repayment calculations
  • 🚀 Instant results
  • 👍 Helpful for financial decisions

Room to Improve

  • 🐛 Incorrect interest calculations
  • 🔍 Limited functionality
  • 💸 Excessive advertisements
  • 🔍 Cannot switch to landscape mode
  • 🔒 Privacy concerns with data collection
Debt Payoff Plan Calculator#3

Debt Payoff Plan Calculator by AppRebel, Inc.

Snowball repayment strategies
Worth Considering
💰 Finance
3.4😐(135 ratings)
Free
Debt Payoff Plan Calculator screenshot 1
Debt Payoff Plan Calculator screenshot 2
Debt Payoff Plan Calculator screenshot 3
Debt Payoff Plan Calculator screenshot 4

This app helps you pay off your debts faster by calculating optimal payment strategies. Choose from various methods like snowball or highest balance first, and visualize your progress with detailed schedules and graphs.

What We Love

  • 👍 Helpful for debt management
  • 💡 Motivates debt payoff
  • 📈 Provides clear payoff projections
  • ✅ Simple and easy to use
  • 📊 Good for visualizing debt
  • 🆓 Free to use
  • 🎯 Focuses on debt snowball/avalanche

Room to Improve

  • 😵 Hard to read text/colors
  • 🐛 Snowball method not working correctly
  • 🚫 No dark mode support
  • 🔢 Inaccurate calculations
  • 🔄 Requires monthly updates
  • 💰 Limits on payment/balance entry
  • 📉 APR limit (99.99%)
  • 💸 Ads can be intrusive

More Interest Calculator Debt apps to explore

FAQ about Interest Calculator Debt

What are the best interest calculator debt apps for iPhone?
Loan Calculator - Debt Planner tops our interest calculator debt apps ranking as of September 2026, with a 4.6-star average from 22K App Store ratings, and it's free to download.
Yes — 20 of the top interest calculator debt apps we rank are free to download, including Loan Calculator - Debt Planner and Loan Calculator‰.
Loan Calculator - Debt Planner shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 246+ interest calculator debt apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app helps you understand the full financial impact of loans and mortgages. It goes beyond basic monthly payments to show you the total interest you'll pay over the life of the loan, when you'll be debt-free, and how extra payments can save you money. It also provides detailed amortization schedules and visualizations of your payoff journey.
Key features include revealing total interest paid, calculating your debt-free date, analyzing savings from extra payments, providing detailed amortization schedules, allowing side-by-side comparison of multiple loan scenarios, and visualizing your payoff progress with graphs. It also includes bonus calculators for credit cards and rental properties.