Watch the video embedded in this tweet. As the wheel turns, keep your eye on the little balls:

Ok we may not have an Apple Watch benchmark, but holy shit I can do 60fps physically-based Metal rendering and realtime physics on the Series 4 ? pic.twitter.com/GXza08pgIP

— Steve Troughton-Smith (@stroughtonsmith) October 2, 2018

That’s not a simulator. That’s an app running on an Apple Watch Series 4. I wish the video was a bit longer, just to make it easier to appreciate the physics of the turning wheel and the gravity-obeying balls. There’s a lot of math going on and it’s all being rendered in real time.

Wow!