# Compounder — Interest Calculator > Compound interest calculator for savings, investments, and retirement planning. (iPhone/iPad app by James Bevins.) - Source: https://appshunter.io/ios/app/compounder/id1412552240 (this page in markdown: same URL + `.md`) - Developer: [James Bevins](https://appshunter.io/developer/1137750302) - Category: Finance, Productivity - Price: Free - Rating: 4.80/5 from 3,438 App Store ratings · 54 written reviews indexed - Age rating: 4+ - Requires: iOS 16.0 · 3 MB - Languages: American English - Released: 2018-07-31 - Data updated: 2026-08-28 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/compounder/id1412552240/reviews.md ## What is Compounder? Compounder lets you easily calculate the power of compound interest to reach your financial goals—whether for savings, investments, or retirement planning. What is compound interest? Compound interest is the interest calculated on both the initial principal and the accumulated interest from previous periods. This powerful tool can make a big difference over time! Example: Imagine starting with $1,000 in savings, contributing $500 monthly at an 11% annual return. After 40 years, that account could grow to $4.38 million! Even small, regular contributions—like the average American car payment—can build lasting wealth. Features: Quickly calculate compound interest with flexible settings. Factor in periodic withdrawals or additional contributions to see how they affect your growth. Easy-to-use interface, designed for anyone wanting to understand and harness compound interest, without needing a finance background. You don’t need to be a Wall Street broker to become a millionaire. Start planning your financial future with Compounder today! ## Key features - Calculate compound interest - Flexible settings - Factor in periodic withdrawals - Factor in additional contributions - Easy-to-use interface ## What do users think of Compounder? Overall sentiment: positive **Pros** - 👍 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 **Cons** - 🐛 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 **Commonly reported bugs** - Calculation issues with initial investment - Formatting issues on mobile devices - Crashes after short usage **Most requested features** - Add percentage option for withdrawal - Allow adjusting periodic contributions (weekly, monthly, etc.) - Include daily compounding option - Add inflation adjustment to contributions and outputs - Create a widget version ## Recent user reviews (10 of 54) All indexed reviews: https://appshunter.io/ios/app/compounder/id1412552240/reviews.md ### 3/5 — Cats *2026-06-27, version 2.0* 🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛🐈‍⬛ ### 5/5 — Great app *2026-06-02, version 2.0* Really easy to use ### 5/5 — Truly Incredible *2026-04-02, version 2.0* This app is so simple yet has all the tools needed. I love nerding out and running calculations on it ### 5/5 — Simple and effective *2026-02-14, version 2.0* Thanks for no ads! ### 5/5 — Great ap *2026-01-23, version 2.0* Great simple app that does what it says on the tin ### 5/5 — Love the app *2025-12-27, version 2.0* I use your app very often please continue it. ### 5/5 — Awesome Compounder App *2025-12-21, version 2.0* GREAT! Easy to use! ### 5/5 — Compounder *2025-07-21, version 2.0* App is Fantastic. Easy to use Instant results. Helps to explain how investment work and the reward at the end. ### 5/5 — I Use this all the time *2025-05-24, version 2.0* I use this as a general check on claims made that I read or watch. I use it for my guesstimates on own personal accounts and even on the reverse of these accounts. Simple and easy to use. ### 5/5 — Best compounder *2025-01-29, version 2.0* Definitely the best and easiest compound calculator for free! ## Frequently asked questions about Compounder ### What does the Compounder app do? 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. ### What are the key features of Compounder? 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. ### Is Compounder free to use? Yes, the application is available for free. There are no in-app purchases or advertisements mentioned, indicating a completely free user experience. ### Who is Compounder designed for? This app is designed for anyone who wants to understand and harness the power of compound interest to achieve their financial goals. This includes individuals planning for savings, investments, or retirement, even if they do not have a background in finance. ### How can Compounder help with financial planning? By using Compounder, you can visualize how compound interest can significantly grow your money over time. The ability to model different scenarios with contributions and withdrawals helps in setting realistic financial targets and understanding the long-term impact of your financial decisions. ## Version history (last 5 releases) ### 2.0 — 2024-10-31 Thank you all for the incredible support since Compounder’s initial release! I’m thrilled to announce our first major update in years, packed with new features and a fresh, modern design. You asked, and we listened! Now, along with calculating compound interest, you can factor in periodic withdrawals to see how they impact your growth over time. This was a much needed features and I am so excited for you all to try it out! Your feedback is invaluable, and I read every review! If you’re enjoying the new features, please take a moment to leave a review on the Apple App Store. Your insights help shape future updates! ### 1.5 — 2019-08-15 What's new in software version 1.5? + In version 1.3 there was an incorrect calculation that occurred when compounding the initial capital investment with no additional payments. Version 1.5 fixes this issue. + Interface Improvement for the iPhone XR and iPhone XS Max. + New touch bar that controls the "compound frequency" improves the user experience. If you are enjoying the software update, please leave a review on the App Store. ### 1.3 — 2018-08-15 Compounder Version 1.3 is an update you don’t want to miss! - With V1.3 you can enter for a chance to win a $25 Amazon gift card. More prizes to come... - Change between 5 different currencies: US, Euro, Yen, Pound, Franc. ### 1.2 — 2018-07-23 Compounder Version 1.2 comes with some very nice improvements. - You can now view a break down for each year of your investment as it compounds. - Dram​atic improvements to the UI on iPad devices. - Fixed an issue that caused the app to crash when a non-integer value was inputted in the text field. ### 1.1 — 2018-07-18 - Bug improvements from the previous version. ## Apps similar to Compounder | App | Rating | Price | Category | | --- | --- | --- | --- | | [Loan Calculator‰](https://appshunter.io/ios/app/loan-calculator/id558688927) | 4.9 (104,929) | Free | Finance | | [Amortization Loan Calculator +](https://appshunter.io/ios/app/amortization-loan-calculator-plus/id1522711172) | 4.7 (104) | Free | Finance | | [Mortgage Pal - Loan Calculator](https://appshunter.io/ios/app/mortgage-pal-loan-calculator/id1478735062) | 4.8 (4,686) | Free | Finance | | [Car Loan Calculator,Auto Lease](https://appshunter.io/ios/app/car-loan-calculatorauto-lease/id1155867843) | 4.8 (1,319) | Free | Finance | | [Loan Calculator - Home Payment](https://appshunter.io/ios/app/loan-calculator-home-payment/id1097378421) | 4.8 (313) | Free | Finance | | [Loan Calculator - Debt Planner](https://appshunter.io/ios/app/loan-calculator-debt-planner/id1059124601) | 4.6 (22,434) | Free | Finance | ## More apps by James Bevins - [Blue Days](https://appshunter.io/ios/app/blue-days/id1139504909) - [Next Step - Health App](https://appshunter.io/ios/app/next-step-health-app/id1159415516) - [Black Noise](https://appshunter.io/ios/app/black-noise/id1195476445) - [Boring.co](https://appshunter.io/ios/app/boringco/id1298582216) All apps by James Bevins: https://appshunter.io/developer/1137750302 ## Related topics [free compound interest calculator](https://appshunter.io/ios/topics/free-compound-interest-calculator) · [roth ira calculator](https://appshunter.io/ios/topics/roth-ira-calculator) · [compound interest calculator](https://appshunter.io/ios/topics/compound-interest-calculator) · [roth conversion calculator](https://appshunter.io/ios/topics/roth-conversion-calculator) · [free investment calculator](https://appshunter.io/ios/topics/free-investment-calculator) · [compound interest calc](https://appshunter.io/ios/topics/compound-interest-calc) · [compound interest simulator](https://appshunter.io/ios/topics/compound-interest-simulator) · [compound calculator](https://appshunter.io/ios/topics/compound-calculator) · [investment calculator](https://appshunter.io/ios/topics/investment-calculator) · [apy calculator interest growth](https://appshunter.io/ios/topics/apy-calculator-interest-growth) · [compound interest](https://appshunter.io/ios/topics/compound-interest) · [daily compound interest](https://appshunter.io/ios/topics/daily-compound-interest) · [solo 401k calculator](https://appshunter.io/ios/topics/solo-401k-calculator) · [daily compound interest calculator](https://appshunter.io/ios/topics/daily-compound-interest-calculator) · [savings plan calculator etf](https://appshunter.io/ios/topics/savings-plan-calculator-etf) · [investment calculator with ai](https://appshunter.io/ios/topics/investment-calculator-with-ai) · [future value calculator](https://appshunter.io/ios/topics/future-value-calculator) · [interest rate calculator](https://appshunter.io/ios/topics/interest-rate-calculator) · [financial calculator](https://appshunter.io/ios/topics/financial-calculator) · [401k calculator](https://appshunter.io/ios/topics/401k-calculator) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*