Privacy Policy
Last Updated: September 15, 2026
1. Overview & Core Privacy Commitment
At CompoundingCalc (compoundinginterestcalc.com), your financial privacy is our highest priority. We believe that your investments, savings numbers, timelines, and financial models belong exclusively to you.
This Privacy Policy explains how our website operates and confirms that we do not collect, transmit, store, or sell your financial data.
2. Client-Side Processing (Zero Data Collection)
All financial calculations, compound interest formulas, amortizations, and chart renderings are executed entirely client-side in your web browser using JavaScript.
- Your principal investment amounts, interest rates, and deposit schedules are never sent to any server.
- We do not maintain user accounts, databases of financial records, or financial profiles.
- When you close or refresh your browser tab, your calculation inputs remain strictly on your local device.
3. Local Storage & Device Preferences
To provide a seamless user experience, we may store non-sensitive UI preferences in your browser’s local storage (`localStorage`):
- Theme Preference: Remembers whether you selected Light Mode or Dark Mode (`theme`).
- Currency Preference: Remembers your preferred display currency (e.g., USD, EUR, GBP, INR).
This data never leaves your browser and can be cleared at any time by clearing your browser cache.
4. Scenario Sharing (URL Hash Parameters)
When you use the "Share Scenario" feature, our tool encodes your selected input parameters directly into the browser's URL hash (e.g., `#p=10000&r=8&t=10...`). This link is generated entirely on your device. We do not store or track these share links on any remote database.
5. Log Files & Web Hosting Infrastructure
Like standard web servers, our hosting provider may automatically log standard technical requests (such as your browser user-agent, IP address, and timestamp) solely for network security, DDoS prevention, and server uptime monitoring. These server logs do not contain any personal financial information.
6. Cookies & Tracking Technologies
CompoundingCalc does not use invasive cross-site advertising cookies or tracking pixels. We respect Do Not Track (DNT) browser settings and privacy-first browsing.
7. Children's Privacy
Our website is intended for general audiences and educational financial literacy. We do not knowingly collect or solicit personal information from children under the age of 13.
8. Contact Us Regarding Privacy
If you have questions or feedback regarding this Privacy Policy or our client-side architecture, please contact us via our Contact Page or email us at [email protected].