Magnifier
The Magnifier app first started out as an Accessibility feature, but Apple decided to give it a promotion.
It’s possible that you haven’t tried the Magnifier app since Apple doesn’t make it easily accessible at first, but it’s a cool app that helps you turn your iPhone into a magnifying glass. You can zoom in and out to make things bigger, and you can even take quick pictures to pass around.
To find the Magnifier app, you can swipe down on your Home Screen to access Spotlight and then type Magnifier. You can also search for it in the App Library either by name or by going through your folders.