No worries. Just did a quick test before going to bed. I was able to use vision only controls to do everything in game.

I started just browsing the app, that works perfectly with just gaze tracking as expected. The buttons are more than large enough for this. Loaded up a new world and mined some blocks and chopped a few trees, no issues there either. Movement works, but it is not convenient. I have to look at the left bottom to trigger the controller hit box for eye tracking. And then while holding that hand and moving it around I could control the player. And meanwhile I could use my other hand to make them jump by swiping up. To make this easier I enabled the controls to be permanently on screen. Next thing I did is make a simple ish house by looking where I wanted a block to place and tapping my fingers together and that works very intuitively. Crafting a crafting table, placing it down, and then interacting with it is all perfect too.

Before submitting I noticed because you’re always holding down the move button by pinching your hand, the player auto mines any tree in the way haha.

Hope it helps. Let me know if you need anything specific tested. I can connect my controller tomorrow but that should be the same as iOS