Black Box
See and manage app network activity on your phone.
Black Box helps you control which apps reach the network on Android, using local VPN protection that runs on your device. Protection activity stays on your phone — Black Box does not operate a VPN server for user traffic.
What Black Box does
Black Box is a privacy and network-protection tool for Android. It uses Android's local VPN system to help apply protection rules on your device. Black Box is designed to process protection activity locally on the phone. It does not operate a VPN server for user traffic, and it is designed to help you see and manage network protection activity in a clear way.
Key features
Local VPN protection
Uses Android's local VPN system to apply your protection rules. The protection runs on your device.
Lockdown Mode
Helps block selected apps from reaching the network. You can turn Lockdown Mode off at any time.
Protection Activity
A clear per-app view of what was blocked while Lockdown Mode was active.
Privacy Timeline
Recent privacy-related events from your apps, shown in plain English.
Daily Protection summary
Optional daily notification recapping recent protection activity. Off by default.
On-device by design
Protection data is kept on your device. Black Box does not send your activity to Black Box servers.
What Black Box does not promise
Black Box is a privacy/security tool, not a guarantee. It does not guarantee perfect protection, and the protection it provides depends on Android system permissions, your device settings, and your phone manufacturer's behaviour. It helps you take sensible privacy choices and see what your apps do in the background.