What apps or hardware do you use to keep track?

In the world of trying to make sure vitals, and metrics are good, what apps or hardware do you use? For example I know many use hardware like Apple Watches, Fitbits, or even Oura rings. In terms of the software side, do you use the default app for those or do you integrate them into one single app (Google Health, Apple Health, etc.)?

I have Samsung Health

I wear a Garmin sports watch for running, hiking, etc.

It measures my sleep at night, and I try to pay close attention to it. Lately, I’m getting terrible sleep. I need to adjust things in life and try to improve it.