I use Moon Phase Pro. It's pretty cool if you're a geek. They also have another called Terra Time that uses Earth (as either a flat map or as a round globe) and displays current clouds and night/day shadows.
https://forums.androidcentral.com/e...er?id=Udell+Enterprises%2C+Inc&token=pM9YOh0k
As for battery life, the Terra Time can drain if it is set too short a refresh time. The Moon Phase one doesn't seem to do much drain at all. The moon one has several different types of visual versions. One is very detailed and more 3D looking to me. The other is "maximum realism" and is what you'd see if you look up. The third is "cheese mode" and very yellow.