Effective date: April 20, 2026
We do not collect, store, or sell any personal information. Your financial data stays on your device.
The Berkshire Mars Index app does not require an account, login, or registration. We do not collect:
The following data is stored locally on your device only, using the device's secure storage (AsyncStorage). It is never transmitted to our servers:
The app fetches publicly available stock market data from third-party financial data providers:
These requests originate from our backend server and do not expose your device's IP address or identity to those providers.
Our API server pre-fetches and caches publicly available stock prices to improve performance. Standard server access logs (IP address, request path, timestamp) may be retained for up to 30 days for security and debugging purposes only. These logs are never sold or shared with third parties.
We do not use advertising networks, tracking pixels, or third-party analytics SDKs. There are no ads in the app.
The app is not directed at children under 13. We do not knowingly collect any information from children.
If we make material changes to this policy, we will update the effective date above. Continued use of the app after changes constitutes acceptance of the updated policy.
Questions about this privacy policy? Contact us at support@berkshiremarsindex.app.