What's eating my network data? Time to get a data usage monitor!
NetChart is a data usage monitor which can monitor data usage for independent app, to monitor mobile data and wifi data. NetChart also provide the download/upload usage for each app, so you can easily know where's yr data going in that app, like uploading or downloading.

Features:
- Monitor mobile data and wifi data
- Monitor data for each app which using your network
- Monitor download and upload usage
- Gererate a pie chart to show you the top 5 most eating app
- Open the app directly when you click on the app
- Timestamp to remind you when did you start the monitor
- Ability to reset the timestamp
- More Feature Coming!

Discussion Thread on XDA!
http://forum.xda-developers.com/showthread.php?p=40083358

Screenshots: