Not sure if its because Im on 4G so the tracking was never accurate!

Im not sure how other people get the accurate tracking because mine was never correct, in fact its not even close to some other competitor apps tracking against Apple iOSs own cellular usage report, which is very close to the billing every month, if you remember to reset statistic on the billing cut off day. I wouldve assumed most people are on LTE/4G by now and it should really be the same for a tracking app to track all the cellular data whether its via 3G or 4G.

pegasuschild about Data Counter - Universal Data Usage Monitor, v3.2