TonNat

No, proximity alert isn't a current feature in Cachly, but it is on our list for a future version.

I have seen this sort of behavior with Geosphere fairly frequently. I mostly ignore the compass direction arrow as long as the distance is going down. My guess is that it is related to the phone compass getting messed with by the large hunk of metal on wheels that I arrived in. It eventually sorts itself out over time. If I have data, I will use Sat view to direct my walking direction. 

Thanks for the response, I will try uninstalling and readding the app etc  and see if this works