Replying to My camera is also my phone

Recently upgraded my iPhone and got the new one that can shoot up to 4k 60fps and in Apple Log. I picked up a few accessories as well, including a gimbal, ND filter, and a few others. I haven't been out to shoot yet but I'm excited to. I wondering if anyone else is in the same position and can speak to their experience filming. I've also downloaded the Black Magic camera app which gives controls that the native app doesn't, like ISO,WB,etc. but if anyone knows of any other apps lemme know!