[josh_p]

I've used Delta both with a gamepad (Backbone) and just with the touch screen to play a few Gameboy Advance games. I have an iPhone 12 Pro Max. The experience was super nice both ways.

The touch screen interface is essentially the shape of the gameboy or whatever Nintendo console you're emulating and is responsive and works the way you expect it to. The Backbone connects automatically and just works. If you want, you can remap the buttons.

The annoying thing about having to use Delta and Altstore is the need to keep AltServer running on my desktop or laptop. Frequently, my phone would be unable to find the running instance the only way to refresh the app (required every 7 days) would be to connect with a wire to my desktop or laptop. When it worked, it was great. But when it didn't, I was annoyed.

That said, it does have cloud sync with various services and it does work well.