InvestMath: Compound Interest

CAGR & Coast FIRE Calculator

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Seven investing calculators in one clean app: compound growth, CAGR, Coast FIRE and savings goals. No account, no sign-up. InvestMath brings seven investing calculators together in one clean, fast app. Enter a few numbers and get a clear answer in US dollars, British pounds or euros. QUICK CALCULATORS • Investment Growth: project a starting balance plus regular contributions • Annualized Return (CAGR): turn a total return over time into a yearly rate • Future Return: see the cumulative return a yearly rate produces • Time to Return: find how many years a target return takes • Goal Contribution: work out what to invest to reach a portfolio goal PLANNING TOOLS • Coast FIRE: find the portfolio value at which you can stop contributing and let compound growth carry you to retirement, and save scenarios to revisit • Investment Goal: check whether your savings plan reaches your target SIMPLE BY DESIGN • No account or sign-up • The amounts you enter stay on your device • Light and dark mode Remove ads anytime with a one-time purchase. InvestMath provides estimates for educational purposes only. It is not financial advice.

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The developer, Ataraxia Labs, 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 Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers
  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Location
    • Identifiers
    • Usage Data
  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

Seller
Ataraxia Labs
Size
50.1 MB
Category
Finance
Compatibility
Requires iOS 16.4 or later.
  • iPhone
    Requires iOS 16.4 or later.
  • Mac
    Requires macOS 13.3 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Ataraxia Labs