Terms of use and disclaimer

1. Who these terms are between

These terms apply between you and the publisher of the app:

In these terms "we" means Sigmastone OÜ and "the app" means Compound Interest Calculator. By installing or using the app you agree to these terms. If you do not agree, please do not use the app.

The app store you downloaded the app from has its own terms, which also apply to your download. The store is not a party to these terms and is not responsible for the app.

2. What the app is

The app calculates how a starting amount and regular payments could grow over time, either at a fixed growth rate that you choose or replayed on the historical monthly returns of US large-cap stocks. It can also show results adjusted for inflation, deduct a yearly fee, model a period of withdrawals, solve for one unknown value, and save scenarios on your device.

The app is a tool for exploring numbers. It does not hold, move or manage money, does not connect to any bank, broker or other account, and does not offer or arrange any financial product or service. It is free of charge and is financed by advertisements.

3. Illustrations only, not advice

Every result in the app is a hypothetical illustration. It follows mechanically from the numbers you enter or from historical data, and it describes no real investment, account or product.

Nothing in the app, on this website or in the app's store listing is financial, investment, tax or legal advice, a recommendation to buy, hold or sell anything, or an offer or invitation to invest. The app knows nothing about your circumstances, and its results do not take them into account.

Past performance does not predict future results. Results based on historical returns show what would have happened in the past under the assumptions of the calculation. They say nothing about what will happen in the future. The value of investments can fall as well as rise, and you can lose some or all of the money you invest.

You alone are responsible for the decisions you make. Before making a financial decision, consider speaking to a qualified professional who knows your situation.

4. No guarantee of accuracy

We take care that the calculations and the data are correct, but we do not guarantee that they are accurate, complete, up to date or free of errors. In particular:

• The calculation is a simplified model. It does not include taxes, and it includes no costs other than the yearly fee you enter. It does not include exchange-rate changes, trading costs or the terms of any actual product.
• The app does not round amounts the way a bank does, so results can differ from a bank's or a provider's figures.
• Historical returns are in US dollars, and inflation-adjusted results use US inflation, whichever display currency you choose. The display currency changes only the symbol and the number format; amounts are not converted.
• The historical data comes from third parties (section 5). It can contain errors and estimates, it can be revised by its sources, and it ends with the last complete year contained in your version of the app, which the app shows next to historical results.
• Historical prices in the data are monthly averages, so returns for a month or a year can differ from returns calculated from closing prices.
• Years that lie beyond the end of the historical data are calculated with the fixed rate and the inflation you entered, and are marked as assumed.

Do not rely on the app as the only basis for any decision.

5. Historical data, sources and trademarks

Historical returns of US large-cap stocks are monthly returns of the S&P 500 index, derived from data published by Robert J. Shiller (Yale University); prices are monthly averages. Inflation: US Bureau of Labor Statistics, Consumer Price Index for All Urban Consumers (CPI-U). S&P 500 is a registered trademark of Standard & Poor's Financial Services LLC. This app is not affiliated with, sponsored or endorsed by S&P Dow Jones Indices, Yale or the BLS.

The app contains only figures derived from these sources. The sources do not guarantee the data and are not responsible for the app or for any result it shows.

The app also contains open-source software. Its licences are listed in the app under Settings, About, Licenses.

6. Using the app

We give you a personal, non-exclusive, non-transferable right to install and use the app on devices you own or control, for your own purposes, for as long as you follow these terms. All other rights in the app, including its name, design and code, remain with us or with our licensors.

You may not:

• copy, modify, decompile or reverse-engineer the app, or extract its data for redistribution, except where the law expressly allows it;
• present the app's results to other people as advice, as a forecast or as a promise of a return;
• interfere with the advertisements in the app or generate advertisement views or taps artificially.

The app is intended for adults.

7. Advertisements and privacy

The app shows advertisements delivered by Google AdMob. We do not choose the individual advertisements, and we are not responsible for their content or for the products and services they promote. An advertisement in the app is not a recommendation by us, including when it advertises a financial product.

How the app handles data, including data collected for advertising, is described in the privacy policy.

8. Liability

The app is provided free of charge, "as is" and "as available". To the extent the law allows, we give no warranty that it will meet your needs, be available without interruption or be free of errors.

To the extent the law allows, we are not liable for any loss or damage that results from using the app or from relying on its results, including financial losses, lost profits and losses from investment, saving, borrowing or tax decisions.

Nothing in these terms excludes or limits liability that cannot be excluded or limited under the applicable law. In particular, our liability for damage caused intentionally or through gross negligence, and for death or personal injury, is not limited. If you use the app as a consumer, you keep all rights that the mandatory consumer protection law of your country of residence gives you.

9. Changes to the app and to these terms

We may change, suspend or withdraw the app or any of its features at any time, and we have no obligation to keep it available or to update its data.

We may change these terms, for example when the app changes or when the law requires it. The version and the date from which it applies are shown at the top of this page. If you continue to use the app after a new version applies, the new version applies to you. If you do not agree with it, stop using the app and uninstall it.

If a provision of these terms turns out to be invalid, the other provisions remain in force.

10. Governing law and disputes

These terms are governed by the law of the Republic of Estonia. If you are a consumer, this choice does not take away the protection that the mandatory provisions of the law of your country of residence give you.

Disputes are settled by negotiation where possible. Failing that, they are decided by the courts of Estonia, with Harju County Court (Harju Maakohus) as the court of first instance. If you are a consumer living in the European Union, you may also bring proceedings in the courts of the country where you live.

11. Contact

Questions about the app or these terms: support@sigmastone.io.
Privacy questions and requests: privacy@sigmastone.io.