Best Interest Calculator Debt Apps

246+ iOS apps curated and reviewed

4.3 avg rating
20 free apps
Updated November 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 (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Loan Calculator: Mortgage, CarLoan Calculator: Mortgage, CarFree4.6★ (23K)YesYesNov 2026
2Debt Payoff Plan CalculatorDebt Payoff Plan CalculatorFree3.4★ (137)NoNoOct 2026
3National Debt - USA & WorldNational Debt - USA & WorldFree4.7★ (1.7K)YesYesNov 2026
4Changed: Automate Debt PayoffChanged: Automate Debt PayoffFree4.6★ (5.7K)YesNoNov 2026
5Loan Calculator‰Loan Calculator‰Free4.9★ (106K)YesNoNov 2026
6Loan EMI Calculator :Loan CalcLoan EMI Calculator :Loan CalcFree4.6★ (5)YesYesNov 2026
7Debt Snowball - Payoff PlannerDebt Snowball - Payoff PlannerFree4.7★ (1.4K)NoYesNov 2026
8National Debt ReliefNational Debt ReliefFree4.9★ (4.8K)NoNoNov 2026

Top Picks for Interest Calculator Debt

Loan Calculator: Mortgage, Car#1

Loan Calculator: Mortgage, Car by ChuChu Train Productions

Amortization Schedule & Payoff
Editor's Choice
💰 Finance
4.6😐(23K ratings)
FreeAdsIn-App Purchases
Loan Calculator: Mortgage, Car screenshot 1
Loan Calculator: Mortgage, Car screenshot 2
Loan Calculator: Mortgage, Car screenshot 3
Loan Calculator: Mortgage, Car screenshot 4
Loan Calculator: Mortgage, Car screenshot 5
Loan Calculator: Mortgage, Car screenshot 6

This app helps you understand the true cost of loans and mortgages by revealing total interest paid and offering payoff scenarios. It provides detailed amortization schedules and allows for comparison of multiple loan options. Ideal for homebuyers, car buyers, and financial professionals seeking clarity on loan terms.

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
Debt Payoff Plan Calculator#2

Debt Payoff Plan Calculator by AppRebel, Inc.

Snowball repayment strategies
Strong Contender
💰 Finance
3.4😐(137 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
National Debt - USA & World#3

National Debt - USA & World by Caramba App Development

US Debt Clock + 180 Countries!
Worth Considering
💰 Finance
4.7😊(1.7K ratings)
FreeAdsIn-App Purchases
National Debt - USA & World screenshot 1
National Debt - USA & World screenshot 2
National Debt - USA & World screenshot 3
National Debt - USA & World screenshot 4
National Debt - USA & World screenshot 5
National Debt - USA & World screenshot 6

Explore national debt figures for over 190 countries, compare them to GDP, and visualize what those numbers could buy. Understand repayment scenarios and track changes over time with official U.S. Treasury reports and IMF data.

What We Love

  • 👍 Easy to use
  • 🚀 Informative data
  • 💡 Interesting comparisons
  • 🔍 Helpful for understanding debt levels
  • 📊 Good data visualization

Room to Improve

  • 🐛 Occasional crashes
  • ⚠️ Inaccurate or outdated data
  • 💰 Annoying ads/upgrade prompts
  • 🇹🇼 Controversial country labeling

More Interest Calculator Debt apps to explore

FAQ about Interest Calculator Debt

What are the best interest calculator debt apps for iPhone?
Loan Calculator: Mortgage, Car tops our interest calculator debt apps ranking as of November 2026, with a 4.6-star average from 23K 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: Mortgage, Car and Debt Payoff Plan Calculator.
Loan Calculator: Mortgage, Car shows ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 246+ interest calculator debt apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.