I’m sure experienced bubblers know this but thought I’d share:
If you create a workflow 'Do when condition is true" and put the condition as say, “Current page scrolling position < -50”, you have essentially created a swipe down action and can trigger say, a page refresh in your workflow or any thing else.
And on your page, you can place a floating group at the top with floating zindex as “beneath the page” and keep a refresh icon animating in the floating group. This way, when you swipe down, you’ll see the refresh icon animating momentarily right before your workflow triggers.