Control internet per app - without rooting your phone. Firewall Security AI - No Root is a no-root Android firewall (firewall for Android / app firewall / internet blocker) with DNS privacy and on-device analysis. See which apps try to go online, review outbound connections in real time, and allow or block them in seconds - before your data leaves your device.

Many apps and even some system services connect quietly in the background to analytics, ad networks, telemetry endpoints, or unknown hosts. Firewall Security AI makes this transparent: every connection attempt is logged with the app name, host/domain, IP address, country, protocol and timestamp. If something looks wrong, block it with one tap.

PER-APP INTERNET CONTROL
• Allow or block Wi-Fi, mobile data and roaming per app
• Make specific apps fully offline when they do not need network access
• Quick rules like "Wi-Fi only", "Always block" or "Allow only what you trust"
• Quick Settings tile to toggle the firewall in one tap

DNS PRIVACY + CUSTOM DNS
DNS is often the entry point for tracking and unwanted requests. Choose a secure DNS provider or set a custom DNS. With DNS-based blocking you can help reduce tracking, ads and phishing. Combine DNS + per-app rules for stronger control - no root required.

SMART BLOCKING (OUTBOUND)
• AI Firewall & Deep Detective™ help you spot suspicious or unknown connection patterns
• IPS focuses on blocking known outbound threats using advanced filter lists with millions of malicious, tracking and spy targets
• Reduce unwanted destinations while keeping the apps you actually need

CONNECTION LOG & INSIGHTS
• Clear log with app, host/domain, IP, country, protocol and time
• Data counters to identify "chatty" apps and unexpected traffic
• Tags and quick filters so you can find what matters fast

REAL-WORLD USE CASES
• Public Wi-Fi: block new or unknown apps until you review their destinations
• Travel: keep roaming strict and allow only essential apps
• Social apps: reduce background tracking without uninstalling
• Games and streaming apps: set "Wi-Fi only" to avoid unexpected mobile data usage
• Quick privacy check: install an app, see where it connects, then decide

QUICK SETUP STRATEGY
• Start strict: block apps you rarely use and allow only what you trust
• Put social, video and games on "Wi-Fi only" to keep cellular usage predictable
• Review the connection log once, then fine-tune rules in seconds

ANDROID VPN SERVICE
This anti spy firewall app uses the Android VPN Service to route traffic to itself so that it can be filtered on-device instead of on a server.
Important: this is not a location-changing VPN. Android VPN is used as a technical interface for local traffic filtering. Android typically allows only one VPN at a time - switch if you use another VPN app.

PRIVACY BY DESIGN
No ads. No account required. Rules and logs stay on your device. Firewall Security AI focuses on visibility and control of outbound (device-to-internet) connections to help reduce unwanted data sharing. If an app stops working after blocking, simply allow it again or set it to "Wi-Fi only".

ABOUT PROTECTSTAR
Firewall Security AI is developed by Protectstar™, an award-winning cybersecurity company trusted by users worldwide for privacy and mobile security.

NO OVERPROMISING
This is a personal firewall focused on outbound visibility and blocking. It does not claim to provide inbound network protection.

GET STARTED IN 3 STEPS
1) Install and enable the personal firewall VPN
2) Set rules for your top apps (Allow / Block / Wi-Fi only)
3) Choose your DNS and filter lists for your privacy level

If you are looking for an Android firewall, no-root firewall, firewall for Android, app firewall, internet blocker or DNS privacy, you are in the right place.