I received a number of inquires from CloudAhoy users asking whether there would be any impact on CloudAhoy after upgrading to Apple’s iOS 6.
The answer: it depends on whether you are using an external GPS device or not. If you use an external GPS I would advise against upgrading to iOS 6. There seems to be a bug in Apple iOS 6 related to communication with external GPS devices.
I have tested CloudAhoy running under iOS 6 with these external GPS devices: GNS 5870 MFI, Dual 150, Garmin GLO and Garmin GDL-39. I have used iPad and iPhone devices. With every one of these devices there have been cases in which the flights were only partially captured. The symptom is that after tapping the Start button with an external GPS, CloudAhoy displays a green GPS light indicating a good GPS signal, but sometimes the accuracy deteriorated in flight, e.g., displaying a yellow light, and the data is not captured.
If you are using iOS 6 with CloudAhoy and with an external GPS device, the following workaround seems to work, but I don’t have enough statistics to tell whether it always does.
Before a flight:
– Close all the apps
– Settings –> General –> Reset –> Reset Location & Privacy
– Make sure the external GPS is connected via bluetooth.
– Start CloudAhoy. Tap “Start”. Then tap OK to “CloudAhoy would like to use your current location”.
The workaround above does not always work. Other aviation software vendors have published their own workarounds (e.g., ForeFlight, WingX), but it’s my understanding that these workarounds are not fail safe either. As I have indicated in one of the comments, I am now flying without an external GPS, and waiting for Apple to fix this.