The Fiwalld is a free full-featured firewall on Android keeps you away from malicious apps.
Key features:
1. Real-time monitor which apps are accessing which servers.
2. Default blocker strictly blocks advertisements malwares spams spyware & trackers coinminer and prevents your system from connecting to them.
3. Easy use interface helps you to add your professional firewall rules just with few clicks.
4. Add or batch provision customed firewall rules for advanced users.
5. Multi-dimensional statistical analysis allows you to quickly identify suspicious applications.
6. Predefined non logging DoH/DNSCrypt Servers provide further protection of your privacy.
7. Support add custom DoH/DNScrypt or UDP DNS servers.
8. Support batch provision whitelist rules.
9. Support checking IP location detail info via external Map app by clicking the country flag.
IPV6 not supported yet under developing...
If you receive a system prompt that Fiwalld is draining battery don't panic. Fiwalld does the connecting work while other applications save this part of the battery so the overall battery consumption remains the same. Acutuallymany unnecessary connections are blocked Fiwalld helps to save battery.