Not sure what I’ve missed, docs say for an icon for the iostabbar create around 50x50, so I do and see it look incorrect in the IDE and bigger than the bar in the simulator, (5s and 6).
I did find that page, felt good that 50 x 50 should be ok. Just tried 44 x 44, not brilliant either, top of the left one still clips the top of the tab bar.