I have an iPhone 8S. I have SkySafari 6 Plus on it and love it. iOS 16.7.2. Newest.
However, my daughter gave me her iPhone X and I am just using it for music, etc. And wanting to use SkySafari 6 Plus on it for fun.
I'm signed in but am unable to find SkySafari 6 Plus to download on the iPhone X. It has iOS 7.1 on it.