Best Free Compound Interest Calculator Apps

249+ iOS apps curated and reviewed

4.8 avg rating
20 free apps
Updated September 2026

Out of 249+ free compound interest calculator 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 Free Compound Interest Calculator Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1CompounderCompounderFree4.8★ (3.4K)NoNoSep 2026
2Compound Interest CalcCompound Interest CalcFree4.8★ (6.5K)YesYesSep 2026
3Compound Interest Calculator FCompound Interest Calculator FFree4.8★ (226)YesNoSep 2026
4Calculator: Compound InterestCalculator: Compound InterestFree5.0★ (2)YesNoMay 2026
5Compounding and Interest CalcCompounding and Interest CalcFree5.0★ (3)YesNoJul 2026
6Compound Interest ToolCompound Interest ToolFreeNoNoMay 2026
7Compound Percentage CalculatorCompound Percentage CalculatorFreeYesNoMay 2026
8Compound Interest Calculator.Compound Interest Calculator.Free4.0★ (8)YesYesSep 2026

Top Picks for Free Compound Interest Calculator

Compounder#1

Compounder by James Bevins

Interest Calculator
Editor's Choice
💰 Finance
4.8😊(3.4K ratings)
Free
Compounder screenshot 1
Compounder screenshot 2
Compounder screenshot 3

Calculate the growth of savings and investments using compound interest. Explore how regular contributions and withdrawals impact your financial goals over time. Designed for anyone to understand and utilize the power of compounding for wealth building.

What We Love

  • 👍 Easy to use
  • 🚀 Instant results
  • 💡 Helps explain investments
  • 🚀 Simple and easy to use
  • 👍 Best and easiest compound calculator
  • 👍 Go-to app for compound calculations
  • 🚀 Makes calculating retirement simple

Room to Improve

  • 🐛 Glitchy and not user-friendly after update
  • 🐛 Can't use quarterly, monthly, or weekly buttons after update
  • 🐛 New version not working well on iPhone
  • 🐛 Can't click off of monthly to quarterly, yearly, or weekly
  • 🐛 Compound frequency stuck on monthly after update
  • 🐛 App crashes after update
  • 🐛 Ads running across the top of the screen
Compound Interest Calc#2

Compound Interest Calc by Dane Hankamer

Plan | Invest | Retire
Strong Contender
💰 Finance
4.8😊(6.5K ratings)
FreeAdsIn-App Purchases
Compound Interest Calc screenshot 1
Compound Interest Calc screenshot 2
Compound Interest Calc screenshot 3
Compound Interest Calc screenshot 4
Compound Interest Calc screenshot 5

Plan your financial future with a powerful compound interest calculator. It helps you visualize investment growth with periodic contributions and plan retirement withdrawals with inflation adjustments. Offers detailed breakdowns and interactive charts for informed financial decisions.

What We Love

  • 🚀 Easy to use
  • 🚀 Visually appealing
  • 🚀 Helpful for financial planning
  • 🚀 Powerful compound interest calculations
  • 🚀 Intuitive interface
  • 🚀 Useful for retirement planning
  • 🚀 Great visualization of investment growth

Room to Improve

  • 🐛 Scaling issues on smaller devices
  • 🐛 Inaccurate calculations in certain scenarios
  • 🐛 Frequent ads disrupting user experience
  • 🐛 Crashing and compatibility issues
  • 🐛 Lack of customization options
Compound Interest Calculator F#3

Compound Interest Calculator F by An Do

Retirement FIRE Calculator
Worth Considering
💰 Finance
4.8(226 ratings)
FreeAds
Compound Interest Calculator F screenshot 1
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Compound Interest Calculator F screenshot 4
Compound Interest Calculator F screenshot 5

Calculate and plan your investments to achieve financial independence and early retirement. Understand the power of earning interest on your interest with detailed projections and visualizations. Start snowballing your money today for a wealthier future.

More Free Compound Interest Calculator apps to explore

FAQ about Free Compound Interest Calculator

What are the best free compound interest calculator apps for iPhone?
Compounder tops our free compound interest calculator apps ranking as of September 2026, with a 4.8-star average from 3.4K App Store ratings, and it's free to download.
Compounder has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 249+ free compound interest calculator apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Compounder is a financial tool that helps you calculate the power of compound interest to reach your financial goals. It allows you to model the growth of savings, investments, and retirement funds by factoring in initial principal, periodic contributions, and even withdrawals.
The app offers quick compound interest calculations with flexible settings. You can easily factor in periodic withdrawals or additional contributions to see their impact on your financial growth. Its interface is designed to be user-friendly for anyone wanting to understand compound interest without needing a finance background.