Outbound firewall for apps, blocking apps from accessing internet. Useful for reducing data usage when tethering to mobile data, or on a slower wifi connection.

NetGuard is described as 'Controls individual app internet access without root, blocks Wi-Fi and mobile data, supports IPv4/IPv6, logging, privacy protection, and detailed notifications' and is a popular Firewall in the security & privacy category. There are more than 25 alternatives to NetGuard for a variety of platforms, including Android, Mac, Android Tablet, F-Droid and iPhone apps. The best NetGuard alternative is AdGuard, which is both free and Open Source. Other great apps like NetGuard are simplewall, RethinkDNS, AdAway and Athena - Firewall & Adblocker.
Outbound firewall for apps, blocking apps from accessing internet. Useful for reducing data usage when tethering to mobile data, or on a slower wifi connection.






