It could be the default app, but I think I moved away from that one at some point. The one I’m using now is Rec Forge II Pro as I can select an external microphone and (I am meant to be able to) edit the calls before submitting the recordings.
I actually solved the question I asked on Zoom yesterday that way, using an app that defaults on the external mic so that I get to use it when it’s plugged in. The best would be able to select the input, but as it works like that, it’s good enough :-) Thank you so much for all work and making iNat such a great platform!