RethinkDNS comes with a companion Firewall app for Android, that lets you monitor and control Internet access to apps installed on your device. It includes rules such as, block apps by category, block when app is in the background, block an app when device is locked, or block an app forever.
RethinkDNS Firewall when configured DNS, you can analyse DNS requests in real-time and read through aggregated reports in the App logs. And it also helps evade Internet censorship as enforced in most countries.
Goto rethinkDNS.com to download.