As I may have mentioned, Invisible Inc is tactical turn-based perfection which presses all the right buttons, but it may be time to choose a new meaty thinky solo time sink for the iPad.
Current favourites are;
Halcyon 6: Starbase Commander
Out There Omega Edition
all of which are highly regarded and have nothing in common. Yes, Civ VI isn’t on this list- I have it and bounced off it.
Which would you choose? What else would you suggest? Bring me your wisdom, SP Hive Mind.