From the few details [1] I've been able to find it seems like it's unusable in the UK anyway as it uses 151-154 MHz, which is a licensed band. If they moved it up into the 433ishMHz unlicensed band their range claims would all have to be revised.

[1] http://gigaom.com/2014/07/17/no-signal-gotenna-has-a-messagi...