Velfix Growth Charts

Velfix Growth Charts is a compound interest calculator built for anyone who wants to understand how their money grows over time.

Set your starting principal, adjust the annual interest rate, and choose how many years to project. The app calculates compound growth year by year and renders an animated chart so you can see the curve take shape as you move the sliders.

There is no sign-up, no account, and no server involved. Everything runs on your device. Open the app, enter your numbers, and get a clear visual picture of how compounding works in practice.

Key features:
- Interactive sliders for principal, interest rate, and investment duration
- Animated bar and line charts showing year-by-year growth
- Breakdown of principal vs. earned interest over the full period
- Multiple saved scenarios so you can compare different strategies
- 4-digit PIN lock for privacy
- Fully offline, no data leaves your device