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Traditional Chinese devices (Taiwan, Hong Kong) now open in Traditional Chinese. Minor stability improvements.
See how your savings could grow over time with compound interest.
Compound interest is often called the most powerful force in personal finance — but it's hard to picture just from a formula. This app turns it into a simple visual: enter a starting amount, a rate, and a timeframe, and watch a chart show you how the numbers unfold. [ WHAT YOU CAN DO ] ● Full Calculation Enter an initial amount, annual interest rate, and number of years. Add regular contributions (monthly, quarterly, or yearly) to see how steady deposits add up alongside compounding. ● Choose How Often It Compounds Daily, monthly, quarterly, or yearly — compounding frequency changes the outcome, and you can compare them directly. ● See the Growth Curve A chart shows your balance over time, with the principal and the interest portion shown in different colors — so you can see exactly how much of the final total came from your own contributions versus compounding. ● Adjust for Inflation Toggle inflation adjustment to see the real, purchasing-power-adjusted value of your future balance, not just the raw number. ● Compare Two Scenarios Set up Scenario A and Scenario B side by side — different rates, different timelines — and see the difference in outcomes. ● Multiple Currencies Switch between major currencies with proper symbols, so the numbers match what you're actually working with. [ WHO THIS IS FOR ] - Comparing savings account or deposit offers before choosing one - Sketching out a retirement savings timeline - Students learning how compound interest actually works - Parents estimating how a college fund could grow with steady contributions [ WHY THIS APP ] - One clear final number, plus the full breakdown behind it - Real growth chart, not just static text - Works fully offline — your numbers never leave your device - No account, no login, no clutter [ GOOD TO KNOW ] This app visualizes compound interest calculations. It is a calculation and educational tool, not financial or investment advice — actual returns depend on real-world factors this app cannot predict. Always consult a qualified professional for investment decisions. See what steady saving could look like, one number at a time.