Firewall Security - No Root

In-app purchases
4.1
1.85K reviews
100K+
Downloads
Content rating
Everyone
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About this app

Take control of your Android’s connections. Firewall Security AI - No Root is a no-root Android firewall (app firewall / internet blocker) with DNS privacy and on-device AI security analysis. See which apps try to go online, block trackers and spy servers, and stop unwanted outbound connections in real time—before your data leaves your phone.

Many apps and system services quietly connect in the background to analytics, ad networks, or unknown hosts. Firewall Security AI makes this visible: every connection attempt is logged with the app, host/domain, IP address and country, so you can allow or block with a single tap. Create separate rules for Wi-Fi, mobile data and roaming—simple and fast.

WHY CHOOSE THIS NO-ROOT FIREWALL
• No root required: install, enable the personal firewall VPN, and start protecting in seconds
• On-device filtering: traffic is routed through a local VPN interface on your phone, not through remote VPN servers
• Ad-free and privacy-first: no ads, no forced accounts; rules and logs stay on your device
• Android 15 compatible and optimised for modern devices

KEY FEATURES
• Per-app internet control: allow/block Wi-Fi, mobile data and roaming per app—or make an app fully offline
• DNS privacy + DNS provider settings: choose a secure DNS or set a custom DNS; reduce tracking, ads and phishing with DNS-based blocking
• AI Firewall & Deep Detective™: real-time network behaviour analysis to help flag suspicious or unknown connections, trojans and spyware signals
• Intrusion Prevention System (IPS): focused on blocking known outbound threats using filter lists with 10M+ domains (malicious, tracking and spy targets) before connections leave your device
• Connection log & data counters: app, host/domain, IP, country, timestamp and usage in a clear log
• App tags & quick filters: instantly see what’s allowed or blocked
• Quick Settings tile: toggle the firewall with one tap

TRANSPARENCY & CONTROL
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.
Firewall Security AI inspects outbound traffic via Android’s official VPN interface before it reaches the network—so you can:
• stop background connections from apps/services you don’t trust
• restrict social apps or games to Wi-Fi to better manage mobile data and roaming
• stay safer on public Wi-Fi by quickly blocking new or unknown apps

Note: 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.

PRIVACY BY DESIGN
Security decisions are made on-device. No mandatory logins. No unnecessary cloud processing. You can review logs, adjust rules, and build a setup that fits your day-to-day use.

ABOUT PROTECTSTAR
Firewall Security AI is developed by Protectstar™, an award-winning cybersecurity company trusted by 8M+ users worldwide. Protectstar’s AI-based security apps have been certified by independent organisations such as AV‑TEST and DEKRA.

REAL-WORLD USE CASES
• New apps: block first, check where they connect, then allow only what you need
• Travel: keep roaming strict and allow only essential apps
• Work & banking: block unknown hosts and keep your network behaviour auditable
• Family devices: keep certain apps offline to reduce background tracking and noise
• Privacy audits: identify “chatty” apps using the log and data counters

GET STARTED IN 3 STEPS
1) Install and open the app
2) Enable the personal firewall VPN
3) Set per-app rules (you can change them anytime)

NO OVERPROMISING
Firewall Security AI focuses on visibility and control of outbound connections from your device. By reducing unknown connections and tracker domains, it helps lower the risk of unwanted data sharing.
Updated on
Jan 22, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, App info and performance and Device or other IDs
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.2
1.73K reviews
Aniket Pawar
January 23, 2026
I think this is not an AI-powered firewall app; it's just a basic firewall features app. I know many filters are locked behind a paywall, but if you check out NetGuard Firewall, it has so many features unlocked, including some important ones. For example, if I install ProtectStar Firewall and accidentally visit a malicious website, and a hidden app is installed through that site, there is no automatic blocking protection in ProtectStar Firewall.
51 people found this review helpful
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M P
January 23, 2026
It is working great I love it especially with the smart home app from Att I can eliminate the IP addresses that have been using our home Internet, running our data out in two weeks leaving us with nothing, considering that we only had one TV hooked up the entire time!!! And we just got upgraded to the high speed Internet also which is a bummer 😞 I unfortunately have a good hacker that keeps adjusting the settings on my phone and apps like no other.
11 people found this review helpful
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ROYAL CLEANING SOLUTIONS
February 19, 2026
Great app, been using it along time but only once in a while I have difficulty with getting it to connect to my phone because it seems, even though I have connections on automatic, when I put on dns, it says can't connect to dns service a lot of times and idk why? can you help?
2 people found this review helpful
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What’s new

+ Adjusted filter list resource management
+ Various adjustments and bug fixes

Thank you for using the Firewall AI and for being part of the Protectstar community!