Basal body temperature and cycle tracking?

Hi there! I’m interested in the ultra human ring and wanted to see if, among all the features it has, it could also replace my BBT thermometer. I’ve seen a few threads on this already but none of my questions were fully answered in those, I’d appreciate the help:

• how does it track BBT: several times throughout the night, do you pick a time to be tracked? Essentially, how is the info conveyed in the app and how does he get that info?

• can I bypass its predictions and copy paste the temperature (ex: 36,67 Celsius) into another app? I use Kindara and self-interpret my cycles.

• finally of course, is it reliable as much as a mouth thermometer?