Some animations can be a lot for some people. They may opt to reduce motion in Settings. You can know by checking isReduceMotionEnabled. You’ll immediately see that the system’s animations are much more subtle. The weather app is a great example.
You may also find interesting...

There is an option for the user to request an experience with Reduce Motion and we should honor it. If your app has animations, make sure to check if the user has this setting on. Here are three examples where Apple does a great job.
If, for some reason, you are creating a button from scratch, instead of relying on UIButton (perhaps you are adding a fancy micro interaction animation?), take into account that you’ll need to configure the button accessibility trait.

Toggles or UISwitches are often found separated from the label that precedes (and describes) them; with an unclear label; missing a value, trait, or hint; or even not being actionable at all.