Volume button to control shutter in iStopCamera

My son is animating LEGOs with an iPhone, the iStopCamera and iStopMotion.
I bought a bluetooth remote to trigger the shutter so he didn’t have to touch the phone or get up and go over to the Mac, but the remote triggers the shutter via the volume button, so it doesn’t work with the app. That feature would be a great add, IMO. Thanks!

Thanks for your suggestion! Actually its implemented that way: If you press the volume button on the iPhone iStopCamera should take a picture and transfer it to iStopMotion on the Mac. I am not sure why this shouldn’t work with a remote volume control.

However, we have native support for Flic buttons: https://flic.io/