How Can We Help?

Email submartingaleoptions+compoundcalculator@gmail.com. Include your app version, device and what you expected. Use fictional amounts when describing a calculation.

Why Is The Result Different From Another Calculator?

Check whether the rate is nominal or an effective annual yield, whether deposits occur at the start or end of each period, and whether contribution and compounding frequencies match. Our Annual Return is nominal; Details shows the effective annual return separately. Partial periods use equivalent compound growth.

How Do I Share A Plan?

Share on the calculator and in Details creates a PDF. Details also offers Export Spreadsheet (CSV). Both files include assumptions and a plan link. The local plan link requires the app to be installed. Share App sends the App Store link without your financial inputs.

How Do Goals Work?

Contribution finds a regular amount, rounded upward to the currency’s smallest unit to reach the target. Time To Goal finds the first month-end that reaches it, up to 100 years. Return finds the mathematical nominal rate required; it does not predict or guarantee that return.

What Does Inflation Adjust?

The inflation-adjusted balance shows estimated purchasing power in today’s money. It does not change the nominal Future Balance.

Where Is My Data?

Your last valid inputs and saved plans are local to your device. They are not an account and are not automatically synced between devices. Export before deleting the app if you want a copy.