go to Connect IQ and check compatible devices for that app, if 5x plus is not listed there, then I think the only way would be communication with developer.
I think the apnea app is implanted by default in the Descent. It is not available on the Connect IQ website. My question was if there was a way of extracting it and install it on the Fenix.
It's part of the firmware and there's no way to install it. You won't find any CIQ apps for it, and there's also differences in the HW as the fenix 5x isn't set up for diving (the pressure sensor only goes to 20 feet, I believe.
