Spin wheel

The simplest is to use UIActivityIndicator.

You can also create a series of images (the different positions of the spinning wheel) and loop through these images in animation.

If you want to animate a clock, you can use emojis of clock hands 🕐

Or system symbols : circle.grid.cross

You have a range of options but first describe what you're doing with the Spin Wheel? By Answering this we will known if you're referring to an item picker for dates and time, or some kind of data model or as Claude31 suggested an activity indicator to indicate there is some kind of background or UI processing taking place.