I am in the process of learning ground station and I hvae run into some confusion.  What is the diffrence between dji vision app and ground station app and what one should I use for what?  I look up tutroials for ground station and they are on the vision app.  Can some one please help me understand the differences and decide what one to use.  Please and Thank You.

Vision App is your basic HOME screen, you can see what the camera sees in real time, and shows sat's locked, battery levels, etc.

The Ground station you can access by swiping on the Vision App screen (right to left) will show an overhead satellite view, from there you can set your ground station mission, location, altitude, etc.

Hope this helps.