Everything Purge DNS and Firewall does stays on your device, and what you see is literally what you get, and nothing more or less, because that's the way it should be.

Longer Version: Everything Purge DNS and Firewall does stays on your phone, so no data is transmitted to any of our servers. Purge DNS and Firewall doesn't use any type of third party analytics, trackers, or APIs, so there's no risk of your data leaking to third parties. This means there's no Google Analytics, no Facebook Pixel, no Mixpanel, Fabric, Mailchimp, etc — nada.

Purge DNS and Firewall collects nothing. It all stays on your device.