Take total control of your mobile internet with Net Data Firewall — the ultimate no-root app firewall, data saver, and background ad blocker engineered for Android.
Ever wonder why your mobile data vanishes or why unexpected pop-up ads appear while browsing your phone? Many applications quietly run background data syncs, transmit tracking analytics, drain battery life, and load hidden ads without your knowledge.
With Net Data Firewall, you can instantly cut off internet access on a per-app basis. Restrict Wi-Fi, 4G, and 5G access for any application with a single tap. Keep personal data private, save gigabytes on your phone bill, and stop battery-draining background trackers immediately.
🛡️ WHY CHOOSE NET DATA FIREWALL?
• No-Root Required: Full network control without voiding your device warranty.
• 100% On-Device Protection: Powered by Android's local VpnService. Your traffic is filtered strictly on your device — zero remote servers, zero external proxies, and zero browsing logs.
• Per-App Rules: Choose exactly which apps can access Wi-Fi, mobile data, or nothing at all.
• Stop Background Ads: Prevent rogue apps from loading intrusive pop-ups and transmitting background telemetry.
• Data Savings Tracker: Monitor live megabytes and gigabytes saved directly from your status dashboard.
• Extend Battery Life: Apps without network access stop background syncing, keeping your CPU cool and battery charged longer.
⚡ KEY FEATURES
1. Per-App Firewall (Wi-Fi & 5G Control)
• Block Wi-Fi access for offline games and utilities.
• Restrict cellular data for bandwidth-heavy media streaming apps.
• Allow network access only when actively using the app on screen.
2. Background Ad & Pop-Up Blocker
• Cut background internet to prevent rogue ad networks from downloading banners and pop-up videos.
• Silence intrusive analytics SDKs that track your location and app habits.
3. Automated Protection Schedules
• Work Mode: Restrict social media and entertainment apps during work hours to stay focused.
• Night Silence: Cut background connectivity while you sleep to save battery and mute midnight alerts.
• Custom Days: Set distinct firewall schedules for weekdays vs. weekends.
4. Real-Time Data Savings Monitor
• Track kernel-level bandwidth stats for every installed application.
• View total blocked connections and gigabytes saved over 7-day analytics windows.
• Identify hidden data hogs before your carrier allowance runs out.
5. Lockdown Mode & Security
• Lockdown Mode: Force-block all internet traffic across your entire device with one tap.
• Biometric Lock: Protect your firewall configurations using Fingerprint or Face Unlock.
• Auto-Start at Boot: Firewall restarts after device reboot for continuous protection.
🔒 COMPLETE PRIVACY GUARANTEE
Unlike traditional VPNs, Net Data Firewall is not an external routing VPN:
• We NEVER route your traffic through remote proxy servers.
• We NEVER collect, sell, or log your personal browsing data.
• Your network traffic stays strictly on your physical phone.
💡 TRANSPARENT FREE VERSION NOTICE
Net Data Firewall blocks other applications from displaying hidden background ads and wasting data. To keep this tool free, we display minor, clearly labeled banner ads strictly within our own app screens. Upgrade to Pro anytime for an ad-free experience and unlimited automation schedules.
📱 PERFECT FOR:
• Users with limited mobile data or roaming plans.
• Gamers wanting to play offline games without unexpected pop-ups.
• Privacy-focused users who want zero tracking and zero telemetry.
• Parents seeking to restrict internet access for specific apps.
Download Net Data Firewall today to protect your privacy, stop background ads, and save mobile data!