Google has confirmed it will add separate volume controls for ringtones and notifications in a future Android build.

The Volume Control Widget is a straightforward and customizable widget that lets you control the volume levels for alarms, media players, voice calls, and notifications directly from your home screen.

macOS has two distinct volume control options in the Sound preference pane that affect how a Mac produces sound. The Alert volume slider in the middle controls sound effect and notification volume ...

The iPhone has a brilliant volume control trick you might not know about - and if you do, you might not be using it.