Entering/Exiting Quickmask on iPad WITHOUT keyboard

Is there any way to enter and exit quickmask on Photoshop for iPad WITHOUT pressing Q on a keyboard?

I use quickmask all the time but I don't want to carry a keyboard with me, that's the whole point of me using a mobile version of the app, is there no onscreen button or menu option to enter and exit quickmask? Seems like there isn't.

Also now I'm trying to exit quickmask (on my ipad, while typing this on my computer) and it keeps telling me the channel is hidden, but there's no way to view the channels, only the layers. So I'm stuck until I open this document on a computer or attach a keyboad, exit quickmask, then re-open on my ipad. image if I had left the house and needed to edit this image without a keyboard, I'd be stuck. It's like the app has full Photoshop functionality but not full GUI interface to access it. Or maybe I just don't know where the button is, but no amount of googling has yielded the answer.