App Needs to be Updated Message

In some of my older Apps (last year) I get a message when I run them in the simulator that the “App needs to be updated”.

What would that be referring to and has anyone else seen that too?

The simulator currently runs in 32-bit mode which is why you see that message. Your iOS apps are built automatically universal to 32-bit/64-bit for devices, so there’s nothing to worry about for on-device support.

Thanks Travis