Last Updated: April 2026
Your privacy matters to us. This policy explains exactly what data we collect, why, and how it is handled.
All financial data you enter — initial investment, monthly contributions, years, currency, and broker fee — is processed entirely within your browser. This data is never transmitted to our servers or any third party.
When you search for a stock ticker in Simulator mode, that symbol (e.g. "AAPL") is sent to our secure server function hosted on Netlify to retrieve historical price data from the Marketstack API. The symbol is not stored or logged by us beyond the duration of the request.
Once retrieved, price data is stored locally on your device using IndexedDB — a browser database — for up to 7 days to reduce repeated API calls. This data never leaves your device after initial retrieval.
Marketstack API — processes ticker symbols to return historical price data. See Marketstack's Privacy Policy.
Netlify — hosts our application and server functions. May process request metadata such as IP addresses in server logs. See Netlify's Privacy Policy.
Cloudflare — provides DNS, security, and web analytics for cisapp.net. Cloudflare Analytics collects anonymised visit data including page views, country, device type, and Core Web Vitals. No personal data or cookies are used for analytics. EU visitor data is handled in accordance with GDPR. See Cloudflare's Privacy Policy.
Sentry — we use Sentry for error monitoring. If a JavaScript error occurs in the app, an error report is sent to Sentry's servers. This report includes the error message, browser type, and device information but does not include your financial inputs. See Sentry's Privacy Policy.
We use your browser's Local Storage to remember your currency preference and calculation state between sessions. We use IndexedDB to cache historical ticker price data locally for performance. Both are stored only on your device and can be cleared at any time by clearing your browser data or uninstalling the app.
We do not currently display advertisements. If we introduce advertising in the future, this policy will be updated and users will be notified before any ad-related data collection begins.
We do not sell, rent, or share your personal data. Since financial inputs are processed locally on your device, there is no personal data held by us to delete. For questions or requests regarding your data, contact us at support@cisapp.net.
If you are an EU resident, you have the right to access, rectify, or erase any personal data we hold, and to lodge a complaint with your local supervisory authority.
Our application may contain links to third-party websites. We are not responsible for the privacy practices or content of those sites.
We may update this policy as the app evolves. The "Last Updated" date at the top of this page will always reflect the most recent revision.