I use Obsidian to take notes for both work and personal stuff, and I use two separate vaults to keep the things a bit separate. In particular on the phone that's an extra few taps to switch between the vaults, which would leave me with notes in the wrong vault occasionally.

Only now I recognized that Obsidian supports Apple's Shortcuts app: The Open Obsidian action allows you to specify which vault to use. welcome to the two Obsidian icons on my homescreen – one for work, one for personal.