It can be super useful for detecting the timing or relative ordering of code blocks. Something like “what order are these 2-3 methods called in and does it vary?” is so easy to hear as you navigate through an app.

Or if you’re doing something async / interactive / whatever, and don’t want to stop the app, but do want to know when a code block executes.

I wish it had more short & distinctive sounds to choose from though! edit: I think I found this project while working at a previous job, but haven’t used it recently: https://github.com/matthewreagan/Xcode-Breakpoint-Sounds