For any good astrophotography, you need to get out of automatic mode and into more granular manual control. On my old camera, I hit a limit even on ISO control and duration of photos, so even showing ISO elements for the moon isn’t quite so obvious. The app compensates to some extent for the duration to still give me a decent shot, so while you don’t necessarily see the images getting completely washed out with ISO settings, you can see that you start to lose detail (as the app compensates) for the mountain range Montes Penninus about halfway up on the left and the crater collection on the bottom.

ISO – Auto

ISO – 100

ISO – 200

ISO – 400

ISO – 800

ISO -1600