Endless Sky is an amazing one. I’ve put tons of hours into it. It’s a top down 2d space trading/fighting game, very similar to Escape Velocity if you’ve ever played that game.

I agree with this idea. But it would make it harder to pick up your phone blindly and know which end is the top. I instinctively feel for the usb port on the bottom so it’s oriented correctly by the time my arm swings it into view.

Agreed. FairEmail is my goto choice. They’re both open source and on F-Droid.

FairEmail does have a $9 license you can buy to add extra features, but even without the license, I found it to be a nicer app than K9.