As the title says. Currently Nothing X app has in-ear detection for Ear. Not sure about other earbuds. But some people frequently use only one earbud because they NEED to clearly hear from other ear. I know there’s transparency mode, but it still needs some work. Switching in the app such as Spotify becomes a hassle when I personally switch up from 1 to 2 earbuds. Sorry if it was said a lot before, but this small addition would greatly make my day 🙂