We have an ipad air, which my partner uses to navigate whilst sailing with a programme called Navionics.
The ipad version is WiFi only, which doesn't have an internal GPS, but that's not a problem because it connects to a separate GPS via Bluetooth.
At least... It wasn't a problem until ios 8.3 Now, although the GPS connects fine, Navionics can't use it to find its position.
It's a known fault that many people have raised. Apple blame Navionics and vise versa and neither is suggesting a solution is immanent.
Is there anything I've missed that might be a solution to let the Navionics app integrate with an external GPS?