What's the best iOS app for figuring out if I'm actually getting enough sleep, especially with these crazy night shifts?

Okay, so working at the bar, my sleep schedule is, let's just say, 'unique'. I needed something to tell me if I'm actually recovering or just running on fumes. That's where Oura comes in. This thing doesn't just count hours; it dives deep into your sleep stages, heart rate variability, and even body temperature. I found this cool feature by accident – it syncs with my Apple Health data, so it knows when I'm working late. The app then adjusts its recommendations based on my actual lifestyle. It's like having a digital barback, but for sleep. The insights are clutch for knowing when to push myself and when to chill. Seriously, it's saved my shift more than once by telling me to take it easy before I completely crash and burn. Plus, the dark mode that actually works at 2am? Chef's kiss.