Recommended iPhone app for tracking data usage?

[dmk1974]

While I was playing around with my son's cheap android phone, I found an interesting feature in the settings where it can alert you when you hit a specific cellular data usage threshold.

I searched and saw a number of different apps listed that may do the same/similar. Was curious if any users here had a recommended app that they use. Thanks!

 

[C DM]

DataMan might be worth a try: http://www.xvision.me/dataman

 

[TITNTUFF]

I use
https://itunes.apple.com/us/app/traffic-monitor-speed-test/id482570191?mt=8
Let it run continuously. Does a great job