Option to fall back to device Bluetooth
I've had a problem for a few weeks ago. I was using my Garmin GLO as external Bluetooth GPS receiver to record a mountain hike. No problem until my way back to the valley. The GLO had went out of power and Locus had stopped recording my position. My hike was not finished when I discovered that so I could activate manually the internal GPS of my phone. The recording of my track resumed as expected but I have now a "hole" of a few kilometers in the recorded track.
Now to my suggestion: it would be nice to have an option in Locus to automatically activate the internal GPS in case the external GPS stops sending data to the device. The user could also be informed about it by an optional sound signal.