Fynoru Growth Charts

Fynoru Growth Charts is a compound interest calculator built for anyone who wants to understand how their money grows over time. No account needed, no internet required — everything runs locally on your device.

The core of the app is a hands-on calculator with interactive sliders for principal amount, annual interest rate, and time period. As you move the sliders, the projected values update instantly, and an animated chart reflects your growth curve in real time. You can explore multiple scenarios side by side, adjusting each variable to see how small changes in rate or contribution period can compound into significant differences.

The app supports both annual and monthly compounding modes, letting you compare outcomes across different compounding frequencies. A dedicated scenarios screen lets you save and revisit different configurations so you can think through your options without losing previous setups.

The chart view animates each projection update smoothly, making it easy to follow how your investment trajectory shifts. Growth data is broken down year by year so you can see exactly where your returns accumulate most.

Dark, light, and system theme options are available. Settings include first day of week preference and default sort order for your saved scenarios.

All data is stored on-device. Nothing leaves your phone.