Roadbiker255

I know I'm about a year off in this thread but I really want one of these. I can't find them for sale in the us anywhere. Any of you guys know where to pick one up from? Also while I was searching for them I found the app. I went to download it to see how it looks and works but states not available in your country........is there a version of this that is useable in the us? If not I'd hate to buy the sensor then not be ale to use it. Any help would be great.thanks!