Features missing from the Android version of Lightroom?

Hello, I just made the switch from an iPhone 8+ to a Sony Xperia 1 III. It has occured to me that there are a couple of important features missing that I use on my old iPhone and iPad pro.

Firstly, when adjusting the white and black points, I would use a second finger to see the overexposed or underexposed areas. That is not in the Android app. Using a second find just shows the before version of the photo. Is the lack of that due to a limitation in Android? And if so, is there another way to do it?

The other thing that's really irritating is not being able to reduce the size of the thumbnails. Even with the long screen of the Xperia, I can only see a maximum of 8 full numbnails. On my iPhone I could see between 30 and 40. In fact, there are no view options all. 

Hopefully this can fixed.