Yes — on Google Play
Ultimate Custom Night has a Google Play listing.
App Store
On Google Play
Is Ultimate Custom Night on Android?
About Ultimate Custom Night
NOTE: A device with at least 2 GB of RAM is required for this game to run properly. Welcome to the ultimate FNaF mashup, where you will once again be trapped alone in an office fending off killer animatronics! Featuring 50 selectable animatronic characters spanning seven Five Nights at Freddy's games, the options for…
Ultimate Custom Night is listed on both the App Store and Google Play from CLICKTEAM LLC USA, so you can install it on Android phones and tablets. The Play Store listing shows 10,000,000+ installs.