My only notes so far are that the options are a little confusing at first glance

iiuc, developer is still working on the documentation and we too had to discover the options ourselves 🤷

that the area where you drag shapes from is too close to the zone where you drag up to switch apps so I kept accidentally switching while trying to move pieces.

same here. When i play with a tablet, it's ok but when i play on my phone, i keep activating the app switch. They should maybe move that zone up, under the options