Can't get your AirPods volume loud enough? There are a few reasons why the volume level may not increase. First of all, you must be actively playing audio for iOS to recognize that you wish to change the volume for a specific app's audio output. Secondly, there could be a problem with your AirPods or your Bluetooth connection. Last but not least, the AirPods volume may be deliberately capped as a safety feature.
There have been Accessibility options to change the appearance of your iPhone apps for some time now. For instance you can change the font size, use bold text, change contrast and so on. Any changes you make, however, are system wide and will affect all of your apps. Not so in iOS 15 - now you can change the appearance of apps on a per-app basis. Here's how to do it on iPhone: