Huh?? – Data Usage (Track your mobile data usage and save money) Review

I've been looking for replacement for data usage and the sure look nice, but when I installed it and went to set it up, I couldn't find a place to set the first date of my billing period, and I'm not sure it accurately accepted my entry of 90 days for the length of my billing period. Too bad, that's an attractive meter, and the notifications seem useful. But I can't figure out how to set the thing.
Review by jeffm23 on Data Usage (Track your mobile data usage and save money).