@Logger makes some good points, I should have specified I'm using iOS. Also the C1 and C2 customization is very good as well since it does both a short and long press, so essentially giving four options.
Ok lets do some pros and cons
Litch:
Pros: Superior mission planning and waypoint execution, panoramic, VR, screen recording, customizable C1 and C2 buttons, and also auto syncs with healthy drones.
Cons: Lack of good active track features, C1 and C2 options are missing one and possibly more options that are in DJI GO app (like center metering), Can be misused by user and program the drone to go beyond it safety limits.
DJI Go 4 App:
Pros: Active track and submenus, gesture mode, latest options for drones (like
inspire 2), and overall more stable
Cons: Lack of advanced automation features like panoramic and highly advanced waypoints. Also no direct sync option for Healthy Drones (although you can get another app to do it)
A good note on healthy drones is that it keeps great records of you flights if you sync to it. I use it to analyze my flight and also export the data in case I want to overlay the information on my videos.