Karma FW

Karma FW is a tool with which you can block the Internet connection on behalf of each of the apps installed on your device. To do it, there's an interface through which you can manage each of the tools independently.

Specifically, from the main screen in Karma FW you'll see a list of all the tools you have installed. This means you just have to tap each tab to turn it green or red in order to activate or deactivate the connection.

Another interesting option in Karma FW is that it can filter your apps by whether they are system apps or you installed them yourself. Plus you can run a firewall for several apps ticked together. Another of the strengths of this tool is that few permissions are required to exercise the actions.

Karma FW makes it very simple to manage the connection of the apps on your smartphone. You're looking at quite an interesting tool to protect your data from the servers of other countries like China or the United States.