cmpnd. - Compound Your Future

Transform your financial dreams into reality with cmpnd., the beautifully designed compound interest calculator that makes complex calculations feel effortless.

Whether you're planning for retirement, saving for a goal, or managing loan payments, cmpnd. brings clarity to your financial future with stunning visual feedback and intuitive controls.

Overview

cmpnd. is a powerful yet elegant financial calculator designed exclusively for iPhone. With three specialized 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 in One App

Growth Calculator

• Watch Your Wealth Multiply
  • Perfect for investment planning and retirement savings
  • See how regular contributions accelerate your financial growth
  • Explore different compounding frequencies and time horizons
  • Real-time calculations update as you type

Withdrawal Calculator

• Plan Your Retirement with Confidence
  • Calculate how long your savings will last with regular withdrawals
  • Watch your remaining balance continue to grow
  • Adjust withdrawal amounts to find the perfect balance
  • Year-by-year breakdown shows exactly how your money depletes over time

Loan Calculator

• Take Control of Your Debt
  • Discover how extra payments save thousands in interest
  • Shave years off your mortgage or loans
  • See the impact of different payment strategies
  • Understand the true cost of borrowing over time

Designed for Real Life

• Automatic Saving
  • Every input automatically saves
  • Never lose your calculations
  • Pick up right where you left off
• Flexible Compounding
  • Weekly, monthly, quarterly, or yearly options
  • Match your real investment schedules
  • See how frequency impacts growth
• Innovative Duration Slider
  • Explore different time horizons with a simple swipe
  • Instantly see how time affects your results
  • Find the sweet spot for your financial goals

Beautiful Visualizations

• iOS 26 Liquid Glass Design
  • Mesmerizing animated backgrounds
  • Makes number crunching a visual delight
  • Premium experience with transparent input fields
  • Floating controls that feel intuitive
• Real-Time Updates
  • Smooth animations as you adjust parameters
  • Watch results update instantly
  • Visual feedback makes complex math understandable
• Year-by-Year Breakdown
  • See exactly how your money grows or depletes
  • Understand the long-term impact of your decisions
  • Track progress toward your financial goals

Built for iPhone

• Crafted Exclusively for iPhone
  • Dark interface that's easy on the eyes
  • Optimized for all iPhone screen sizes
  • Desktop-class calculations in your pocket
• Smart Details Everywhere
  • Tab bar intelligently hides for more screen space
  • Reappears with a gentle tap
  • Currency formatting happens automatically
  • Every calculation updates instantly as you type

Who It's For

• Young Professionals - Starting their investment journey and wanting to see the power of starting early
• Parents - Planning for their children's education expenses
• Homeowners - Wondering if those extra mortgage payments are worth it
• Retirees - Calculating if their nest egg will last through retirement
• Students - Learning about compound interest in an interactive way

Why cmpnd.?

Unlike generic calculators, cmpnd. was designed specifically for the calculations that matter most in life. No overwhelming options or confusing terminology. Just three focused tools that answer your biggest financial questions with style and precision.

Privacy First

• Your Data Stays Private
  • No account required
  • Collects no data
  • Works entirely offline
  • Financial information stored only on your device

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.

Get Started Today

Start compounding your future today. Download cmpnd. and transform complex financial calculations into clear, actionable insights.

Requirements

Requires iPhone with iOS 26.0 or later. Optimized for all iPhone screen sizes. Not available on iPad.