I have two apps that are currently being tested by external testers, via TestFlight.
When I do a new build of one, it always goes through app review before the external testers can try the app. Reviews are currently taking from one to two days.
Another of my apps is always instantly available for external testers, without needing to be reviewed.
I was wondering why this is the case? And is there anything I can do to not require a review everytime I do an update for external testers -- as is the case with one of my apps?