The iPhone has a great accessibility feature that’s been adopted by many popular apps—Dynamic Type, which lets you increase or decrease the text size for the OS and all supported apps, is a prime example. Starting in iOS 15 and iPadOS 15, you’ll be able to specify the text size for each app (and even the home screen) independently, thanks to a handy new Text Size control in the device’s Control Center. (iOS 15 and iPadOS 15 are currently in public beta, and the stable release should be out in the fall.)
How to add the Text Size control to the Control Center
To start, you’ll need to add the Text Size control to the Control Center (the toggles that show up when you swipe down from the top-right corner of the screen).
Open the “Settings” app on your iPhone or iPad, and go to the “Control Center” section. Tap the green Plus icon next to the “Text Size” option to add it to the Control Center. You can now use the three-lined Handle icon to rearrange the Text Size control.
How to change the text size for a specific app using Control Center
Now that the Text Size control is added, open the app in which you want to change the text size, and swipe down from the top-right corner of the screen to open the Control Center. Tap the “Aa” Text Size icon.
At the bottom, switch to the “(app name) Only” option. By default, the feature will change the text size of the entire OS. Now, you can swipe up or down to change the text size. You can go all the way from 80% to 310%.
Swipe up from the bottom of the screen to exit the Control Center. You’ll see the updated text size instantly.
You can go back to the default size at any time. To do so from the Control Center, tap the Text Size (“Aa”) button, and after switching to the app-only option, go back to “100%.”