Privacy policy

Calculations run in your browser or in the app's secure web view. The numbers you enter are not sent to or stored in an account or application database. When you use “Copy link” or the system share sheet, your inputs may be placed in the page URL; anyone you share that URL with can see those inputs.

Mobile app data

The FreeFast Calculator mobile app stores your language choice, favorites and recently opened calculators locally on your device. This information is not uploaded to us. You can clear recent calculators in Settings; removing the app deletes its remaining local preferences.

Hosting and network data

Calculator pages are delivered by our hosting provider, Cloudflare. Cloudflare may process standard request and security data, including IP address, request time, requested URL, device or browser type and security signals, to deliver the service, prevent abuse and maintain performance. Retention of that infrastructure data follows Cloudflare's applicable policies and legal obligations.

Analytics, advertising and tracking

We do not currently use advertising SDKs, cross-app tracking, behavioral advertising or third-party analytics in the mobile app. We do not sell personal information.

Your choices

The app does not create user accounts and therefore holds no server-side account profile to delete. You can avoid including calculator inputs in a shared link by not using the share feature, clear recent items from Settings, and remove all locally stored preferences by uninstalling the app.

We will update this policy before introducing a new category of data collection or a new use of personal information.

Last updated September 26, 2026.