Not worth it

Before you purchase, realize the usage shown is only current MBs used at that moment & this resets every time you turn the WIFI on & off. Youd have to add manually to know yr total usage toward yr 2 or 3 Gs. The text at the bottom says 0 MBs used total & always says zero. The developer told me this feature is "experimental" & doesnt "always work." I asked for a refund and he referred me to iTunes Support. :/

AngelaHolly about MyMiFi - monitor your MiFi signal and battery