Compound Interest Calculators
Investment Growth & Savings
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Explore compound growth with a free calculator and chart. Unlock plan comparisons, savings goals and PDF reports with one purchase. No ads or subscriptions.
Compound interest calculator for savings and investment growth, with clear charts, side-by-side plan comparisons, goal solving and detailed PDF reports.
The calculator, chart and Details are free; comparing plans, goals, saved plans and PDF and CSV reports are in the one-time Full Calculator purchase (no subscription).
SEE WHAT YOUR MONEY COULD BECOME
Enter a starting balance, annual return, timeline and regular contribution. See Future Balance and Net Gain update as you explore. A readable chart shows the path, with month or year labels that adapt to your timeline.
SEE WHAT A CHANGE COULD DO
Keep your current plan beside an editable alternative. Compare contributions, returns, duration and timing without overwriting your original plan. Apply the alternative only when you choose.
FIND A PATH TO YOUR GOAL
Solve for the regular contribution, time to reach a target, or required annual return. Each solver asks a clear question and shows the relevant assumptions. A required return is a mathematical result, not a prediction or guarantee.
UNDERSTAND THE NUMBERS
Contribution and compounding frequencies are independent. Choose beginning- or end-of-period contributions, include extra months, compare return assumptions and see an inflation-adjusted balance in today's purchasing power.
KEEP AND SHARE THE WHOLE PLAN
Share a PDF with your chart, results, assumptions, return comparisons, annual schedule and complete monthly appendix. Export a CSV with results, inputs and monthly contributions, growth and balances. Plan links let installed recipients reopen the same inputs.
MADE FOR EVERYDAY USE
Your last valid inputs are remembered. Save plans locally with the Full Calculator. Use System, Light or Dark appearance. Calculations work offline, with no account, ads, subscription or tracking. The Full Calculator is a single optional purchase.
Hypothetical educational calculations only. Returns are not guaranteed. Taxes, fees, market volatility and irregular dated payments are excluded. Annual Return is nominal; Details also shows effective annual return. Currency formatting does not perform currency conversion. Saved plans do not automatically sync between devices.
Ratings & Reviews
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Updated App Store information for the compound interest calculator, savings plans and investment growth tools.
The developer, Chirag Mirani, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Chirag Mirani
- Size
- 6.6 MB
- Category
- Finance
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 43 more
- English, Arabic, Bengali, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Oriya, Polish, Portuguese, Punjabi, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Full Calculator $2.99
- Copyright
- © 2026 Chirag Mirani
