Net Data Saver : Ad Blocker

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.

✨ NEW

• Data Plan Tracker: see what's left and get warned early.

• Only While Open: internet only while the app is on screen.

• Roaming Guard: block mobile data abroad, except apps you choose.

• Live Usage: see which apps use data right now.

• Data Today widget and in-app guides.

🛡️ WHY CHOOSE NET DATA FIREWALL?

• No-Root Required: Full network control, warranty safe.

• 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: Blocked apps stop background syncing, so your battery lasts 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 while the app is 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 data use for every installed app.

• View total blocked connections and gigabytes saved over 7-day analytics windows.

• Spot hidden data hogs before your plan 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.

💡 Free with small ads in our own screens. Pro removes ads and unlocks more automation.

📱 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.

• Anyone who needs a no root firewall, app internet blocker or data usage monitor.

Download Net Data Firewall today to protect your privacy, stop background ads, and save mobile data!