Eats cell data! Awful.
Used it for a month and thought it was ok. Then I reset the data on my phone and realized, that since the only records data while its on, it was consuming a substantial amount of 3G. Did tests and resets, up to 20% was this app on small data usage (under 50mb). Wasnt wasting any more to have it fail. Trying another program that splits the data by app usage. Dont use this!!
JamieMacP about
Data Monitor - Manage Your Usage