What is cmpnd.?
cmpnd. is a beautifully designed compound interest calculator exclusively for iPhone that transforms complex financial calculations into clear, actionable insights. With three powerful calculators and iOS 26’s revolutionary Liquid Glass design, cmpnd. makes financial planning feel less like work and more like designing your future.
Three Powerful Calculators
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Growth Calculator Watch your wealth multiply over time. Perfect for investment planning and retirement savings, see how regular contributions accelerate your financial growth with different compounding frequencies.
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Withdrawal Calculator Plan your retirement with confidence. Calculate how long your savings will last with regular withdrawals while your remaining balance continues to grow. Year-by-year breakdowns show exactly how your money depletes over time.
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Loan Calculator Take control of your debt. Discover how extra payments can save thousands in interest and shave years off your mortgage or loans. Understand the true cost of borrowing with different payment strategies.
Key Features
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iOS 26 Liquid Glass Design Experience mesmerizing animated backgrounds that make number crunching a visual delight. Premium transparent input fields and floating controls create an interface that’s as beautiful as it is functional.
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Automatic Saving Every input automatically saves, so you never lose your calculations. Pick up right where you left off, making it perfect for comparing different financial scenarios.
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Flexible Compounding Choose between weekly, monthly, quarterly, or yearly compounding to match your real investment schedules and see how frequency impacts growth.
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Real-Time Calculations Watch results update instantly with smooth animations as you adjust any parameter. Visual feedback makes complex compound interest math understandable at a glance.
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Smart Interface The tab bar intelligently hides for more screen space and reappears with a gentle tap. Currency formatting happens automatically, and every detail is optimized for one-handed use.
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Privacy First No account required, no data collected. All calculations happen locally on your device. Your financial information stays completely private.
Who It’s For
cmpnd. is perfect for young professionals starting their investment journey, parents planning for education expenses, homeowners considering extra mortgage payments, retirees calculating if their nest egg will last, and students learning about compound interest in an interactive way.
Technical Excellence
Built with SwiftUI and iOS 26’s latest technologies, cmpnd. delivers desktop-class calculations in your pocket. Every animation is precisely crafted. Every interaction is instantaneous. Every calculation is accurate to the penny.
Important Disclaimer
cmpnd. is a financial calculator for informational and educational purposes only. It does not provide financial, investment, tax, legal, or accounting advice. All calculations are hypothetical. We are not responsible for any financial decisions you make based on calculations from this app. Always consult with qualified financial advisors before making financial decisions.