Requires rooted devices.
Network Log monitors iptables-logging to display a real-time list of which apps are making network connections, and provides statistics about those app connections.
The log tab shows the network packets being transmitted and their details such as:
The applications tab lists installed applications along with network usage statistics such as:
The statusbar icon's up/down arrows will highlight when upload/download traffic occurs, and the notification drop-down shade displays the connection throughput speed in Kbps.
You can also configure toast pop-up notifications on a per-app basis that will pop-up a temporary notification containing connection details no matter which app you are in.
Click an app in either tab to see time-lines of its connections.
Select the 'Apps Timeline' menu item to see an over-all time-line of all apps.
Adjustable interval from 1 ms to 48 hours for summing data:
Adjustable pinch-zoomable and scrollable graphs.
Requires rooted devices.
Full source code available at http://code.google.com/p/iptableslog/source/list and https://github.com/pragma-/networklog.
Submit any bugs or feature requests to http://code.google.com/p/iptableslog/issues.
Note: While the app itself is designed to use minimal CPU/battery, you can further reduce the CPU/battery use by exiting the app after starting the logging service.