When you start SkySafari Pro 6 latest update on iPadOS 13.3 the splash screen no longer shows. I was confused as all I saw was a blank screen. SkySafari eventually started. This does not happen on my iPhone 7 with iOS 13.3 so it seems like an iPadOS only issue.
SkySafari 6 Splash Screen Missing On iPadOS 13.3 (Answer: Fixed With Update)