Best Free Compound Interest Calculator Apps

250+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated October 2026

Out of 250+ 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 (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1CompounderCompounderFree4.8★ (3.4K)NoNoOct 2026
2Compound Interest CalcCompound Interest CalcFree4.8★ (6.5K)YesYesOct 2026
3Calculator: Compound InterestCalculator: Compound InterestFree5.0★ (2)YesNoMay 2026
4Compound Interest Calculator FCompound Interest Calculator FFree4.8★ (226)YesNoOct 2026
5Compound Percentage CalculatorCompound Percentage CalculatorFree—YesNoMay 2026
6Comp Interest CalculatorComp Interest CalculatorFree—NoNoMay 2026
7Compound Interest ToolCompound Interest ToolFree—NoNoMay 2026
8Compound Interest Calculator.Compound Interest Calculator.Free4.0★ (8)YesYesOct 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
5.0(2 ratings)
FreeAds
Calculator: Compound Interest screenshot 1
Calculator: Compound Interest screenshot 2
Calculator: Compound Interest screenshot 3
Calculator: Compound Interest screenshot 4

This app calculates compound interest, showing how investments grow exponentially over time. It differs from simple interest by reinvesting earnings, leading to accelerated asset accumulation. Understand the power of compounding for your financial 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 October 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 October 2026.
We track 250+ free compound interest calculator apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.