A no-root Android app that blocks internet access per app using a local VPN. Choose between blocking all traffic or only specific domains from customizable blocklists — no ads, no tracking, no data leaves your device.
Grab the latest signed APK from Releases.
- Per-app traffic control — Select which apps to block from a list of all installed apps
- Two blocking modes per app:
- Block All Traffic — Blocks every DNS query, completely cutting off internet for the app
- Block Domains Only — Blocks only domains matching your configured blocklists, everything else works normally
- Background data blocking — Optionally block an app's network access when it's not in the foreground, preventing background ad loading, telemetry, and data usage
- Custom domain blocklists — Add your own blocklist URLs (plain domain lists or hosts-file format). The app downloads and parses them automatically
- DNS query log — Real-time log of all DNS queries showing blocked vs allowed domains per app
- Blocking profiles — Save and switch between different blocking configurations for quick toggling
- Quick Settings tile — Start/stop the blocker from the notification shade
- Launcher shortcuts — Long-press the app icon for Start/Stop shortcuts, compatible with Samsung Routines automation
- Persistent service — Survives app removal from recents, system kills, and device reboots
- Auto-start on boot — Optionally resume blocking when the device restarts
- Dark mode — System default, light, or dark theme
- No ads, no tracking, no internet permission abuse — The VPN only intercepts DNS traffic for selected apps
Traffic Blocker uses Android's VPN API to intercept DNS queries from selected apps:
- A local VPN tunnel is created that only routes DNS traffic (to
8.8.8.8/8.8.4.4) - Apps are scoped using
addAllowedApplication()so only selected apps are affected - DNS queries are intercepted and parsed from the tunnel packets
- For Block All apps: every DNS query returns
0.0.0.0/::(no internet) - For Block Domains apps: queries matching the blocklist are blocked, others are forwarded to upstream DNS
- Background blocking: when enabled, all DNS from the app is blocked while it's not in the foreground
- Known DoH/DoT providers are blocked to prevent DNS bypass via encrypted DNS
Non-DNS traffic is never routed through the VPN — apps with "Block Domains" mode can still access non-blocked sites at full speed.
We recommend using the excellent blocklists by Hagezi — huge thanks to him for maintaining comprehensive, regularly updated domain lists.
Popular picks from Hagezi:
| List | Domains | Description |
|---|---|---|
| Light | ~80K | Basic ad/tracker blocking with minimal false positives |
| Normal | ~180K | Balanced blocking for daily use |
| Pro | ~310K | Aggressive blocking for advanced users |
| Ultimate | ~400K | Maximum blocking coverage |
Just copy any of the URLs above and paste it into the app's Domain Blocklists screen.
You can also add your own blocklist URLs. The app supports two common formats:
Plain domain list (one domain per line):
ads.example.com
tracker.example.net
Hosts file format:
0.0.0.0 ads.example.com
127.0.0.1 tracker.example.net
Lines starting with # or ! are treated as comments. www. prefixes are automatically stripped.
- StevenBlack/hosts — Unified hosts with ads, malware, and trackers
- OISD — Curated blocklist balancing blocking and usability
- Android 8.0 (API 26) or higher
- VPN permission (prompted on first use)
- Usage Stats permission (for foreground app detection)
- Battery optimization exemption (recommended for reliable background operation)
git clone https://github.com/akash705/Traffic-Blocker.git
cd Traffic-Blocker
# Debug APK
./gradlew assembleDebug
# Release APK (requires keystore.properties)
./gradlew assembleRelease- Language: Kotlin
- UI: Jetpack Compose + Material3
- Database: Room
- Navigation: Jetpack Navigation Compose
- Architecture: MVVM with StateFlow
- Min SDK: 26 (Android 8.0)
- Target SDK: 35
MIT License. See LICENSE for details.
