app for data management for specific sites

[MrCalzones]

Ok so, im looking for an app that allows me to manage my data usage for specific sites (or IPs). Since my mobile plan isnt that great, i have to be very careful where i use my MBs
I dont know if i made it clear on what i want...

The app will tell me this for example

Data usage this week:
Facebook.com has used 30MB
google.com has used 15MB
youtube.com has used 100MB

If anyone knows any app that can tell me this data, it would be great. Thanks

 

[Rukbat]

An oldie but a goodie - I've had it for years. 3G Watchdog.