Firefox: Private, Safe Browser is designed to minimize data collection and prioritizes user privacy, but some anonymous data may be collected for performance improvement.

Firefox: Private, Safe Browser does not support offline use, as it requires an internet connection to browse the web.

To cancel your subscription, go to your app store account settings, find the subscription section, and select the option to cancel the Firefox subscription.

While the app itself is free, there may be premium features available through subscription services, typically priced at a competitive rate, which can vary based on the offering.