I bought this app and was content of it for about a month, after which I stated receiving bills through which I found my data was through the roof--which Dataman(whos only usage is to track data) did not notify me and told me everything was fine. Complete waste of time, money, and highly expensive if it cant keep track of your 3G.
Nasty stuff, dont buy, just dont. Dont do it man.
tristandp about DataMan - Data Usage Widget, v9.3