Main - iPhone 6s with iOS 9
Alt - Moto G Play Verizon Prepaid (activation not req, wifi only for my use); Link - https://www.amazon.com/Moto-G-Play-Verizon-Prepaid/dp/B01M61A8JK; currently Android 6 and will be upgraded to 7.
I'd try the game on Tablet first to see if you can handle the difference. The Moto G Play is probably the best cheap alt device option ($55) with nice specs. The "weakness" is the screen but I don't consider it bad. Screen size is 5" compared to iPhone 6s' 4.7". It does the black screen pause before co-oping which multiple people have mentioned (generates a connecting screen on the iDevice, but not a reconnect), but that's just a Android issue at the moment.