I wonder when DJI developers add DJI Fly app at the famous smart controller ? a lot of  DJI customers have been waiting for this upgrading. It is no logic to buy the right smartphone specialy for using mavic mini 2 !  Do developers have no time for working on it ? or Does it cost too much for making it ?

I wonder when DJI developers add DJI Fly app at the famous smart controller ? a lot of  DJI customers have been waiting for this upgrading. It is no logic to buy the right smartphone specialy for using mavic mini 2 !  Do developers have no time for working on it ? or Does it cost too much for making it ?