NetGuard no-root firewall v2.328 Pro

NetGuard provides simple and advanced ways to block access to the internet – no root required. Applications and addresses can be allowed or denied access to your Wi-Fi and mobile connection.

Blocking access to the internet can help

reduce your data usage
save your battery
increase your privacy

Features:

Simple to use
No root required
100% open source
No calling home
No tracking or analytics
Actively developed and supported
Android 4.0 and later supported
IPv4/IPv6 TCP/UDP supported
Tethering supported
Multiple device users supported
Optionally allow when screen on
Optionally block when roaming
Optionally block system applications
Optionally notify when an application accesses the internet
Optionally record network usage per application per address
Material design theme with light and dark theme

PRO features

Log all outgoing traffic; search and filter access attempts; export PCAP files to analyze traffic
Allow/block individual addresses per application
New application notifications; configure NetGuard directly from the notification
Display network speed graph in a status bar notification
Select from five additional themes in both light and dark version

There is no other no-root firewall offering all these features.