After updating to 610 and 1.2.4, I still have no Yaw Smoothness function in Normal Mode...regardless how far I move the slider in either direction.  I have Yaw Smoothness in Tripod and Sport, but not in Normal.  I have an iPhone SE 2020.  I have had this issue forever.  Can anyone verify that Yaw Smoothness works on their mobile device in Normal Mode??? Thanks

Try completely deleting the App, turn the phone off, then on.   Then do a full reload of the App.  Sometimes updates don’t fully do a replacement.  Worked for me.

Try completely deleting the App, turn the phone off, then on.   Then do a full reload of the App.  Sometimes updates don’t fully do a replacement.  Worked for me.

Today, I installed IOS Fly app 1.2.5 and now have Yaw Smoothness control!!!