I bought this GPS there is now one year in addition to my iPad Wifi Air. I am quite happy because it gives me always very precise position. The changeover to the iPad via wifi localization via internet to the location via Bluetooth does not always directly and sometimes you restart the app user or reset the Bluetooth on the iPad. By cons communication with iOS 8.3 does not work (as with any Bluetooth external GPS seems you). Personally, I will try to return to later pending resolution of the problem by Apple.