Oh and I recommend "Star Traders RPG" if its not already on this thread. Great Space RPG sandbox game. Huge Universe/Tons of things to do/Cheap (2.00)/ Nothings extra to buy/ Game has been out for years and Dev. still bends over backwards to do updates (Not to fix bugs there are none that I've seen, But to add content.) It was the first andriod app. I ever paid for, and I still play it on occasion now.When you wrote Nightsky it reminded me of a great App I use called "Night Sky" where it allows you to move your iPad/iPhone around and see which stars/planets are currently in the sky in real-time. I find it fun and useful.
Yeah, I used to use Google Skymaps until I upgraded to the Tab 3 where it doesn't work well, and found one called Star Chart which is prettier but does the same thing.
Oh and yeah, Cutter. The disadvantage of having so many different Android devices, is that you'll often encounter apps that aren't compatible with certain devices. I guess that's another reason why app developers prefer developing for iOS.
The reason Devs love developing for iOS is there are a lot of people that will pay serious money to be seen with that shiny metal Apple stamped on the back of their device.