I have been searching online to find out if the Osmo+ has a follow focus feature.  I have seen people tap on the screen to get the initial focus but if the subject moves away will it track.  Thanks for the answer.

Dont think there is a follow focus function, but You can activate automatic
focus, when gimbal stand still.

You are referring to Active Track function right? If yes, sorry that Osmo+ doesn't have this feature.

How about focus when the subject is in frame.  Lets say someone is running and you have touched them on the iPhone to focus on them.  Then they start running faster and pull away from you.  Will the Osmo+ hold focus on them as they pull away or is the focus distance set to your original distance?