How to Change Individual App Text Size on iPhone

You can find various accessibility features on the iPhone. Some of the most useful include hearing aid support, speech-to-text conversion, and more. Recently, back tap joined this club with iOS 15. However, one cool thing hidden inside is the ability to change the text size or font size for a specific app.

You can set the text size on an iPhone, but that setting would apply to system-wide text. Thus, each text is too big or too small according to your choice. After iOS 15, you can set a different text size for each app. Here's how you can do it.

What is the individual app text size on iPhone

The Settings app offers a setting to change text size, but this applies to all apps on iOS. There was no way to set a custom text app size for each app.

change text size

With individual text size, you can have smaller text in social media apps and bigger fonts for your messaging app — just to make important things easier to read.

How to Set Individual App Text Size on Your iPhone

The option is available for iPhones running iOS 15 or later to adjust text size for individual apps. All iPhone devices launched after iPhone 6S support this feature. Here's how you can enable it.

Step 1: Open the Settings app on your iPhone and select the Control Center option.

Control Center to add text size toggle

Step 2: Here you will see a list of all the toggles that you have added to the control center. Scroll down and you will find the text size. Tap the green "+" icon next to it.

Toggle text size

Step 3: This will add the Text Size toggle to the control center. You can pull down from the top right edge of your iPhone to check if the toggle appears in Control Center. If you're using an iPhone with a home button, swipe up from the bottom to access Control Center.

toggle text size

Note that instead of the “+” icon you see a red “–” icon next to the text size, this indicates that the text size toggle is already present in the control center. In this case, you don't have to modify anything in this menu.

Individual text size

Step 4: Now that you've added the toggle, open an app where you want to change the text size. Consider Parameters as an example.

Settings app

Step 5: Open Control Center on your iPhone and tap the Text Size toggle.

toggle text size

Step 6: A new page will now open with a slider to adjust the text size. You can drag the slider to any value you want depending on whether you want to increase or decrease the text size.

Change individual text size

100% is the default text size. Swiping up will increase it to 310% and swiping down will reduce it to 80%. The words "Text Size" at the top of the screen and the percentage value displayed below indicate the current text size, so you can use it for reference.

Step 7: Once you have set the desired text size, drag the horizontal slider at the bottom to Settings only. Of course, the name of the application will be different depending on the application you open.

If you want to change the text size on all apps to this value, you can leave it on All apps.

horizontal slider for individual applications

Step 8: Go back to the app and you will see the text size has changed to the desired value.

Settings app font size

Step 9: If the new text size is too big or too small, you can go back to the control center and change it accordingly.

You have now successfully changed the text size of an individual app on your iPhone. Repeat the same process from step 4 for all required applications.

Use different font sizes on individual apps

Feel free to experiment with different font sizes on different apps. Smaller fonts on a vertical scrolling feed are useful if you want to display more content. Larger text size helps make content easily readable, especially for older people.