[glhaynes]

Yeah, I cringe at seeing a share sheet shown by a double-tap on a grabber. For one, I strongly expect share sheets on iOS to be shown only by the normal "share" icon; for another, I don't expect double-tapping on a grabber to do anything. Inherent in a grabber is its "grabbiness": it's something tactile that you drag, not something you tap on. (Yes, Chrome uses a clickable grabber-looking-thing for displaying a menu; that's unfortunate IMO.)

Additionally, having "Clear" as an option in a share sheet feels really wrong too.

If something acts differently than another thing, generally it should look different, too. This thing isn't a grabber (at least not as far as I'm aware of from having seen the linked page) and the thing that it shows isn't a share sheet.

I do definitely like the idea of a quick, minimal sketching app like this that ruthlessly eschews feature creep to do one job well. I think you're on the right track and am interested in getting this!