The old app had some nice features in theory but in reality wasn’t as reliable and “pro” as one might hope it would be. I had several takes ruined because of unexpected audio issues. Connectivity with a gimbal was very unreliable. The builtin camera app and DJI’s app proved more reliable. The log was nothing more than a low contrast curve with no actual improvements in Dynamic Range. It’s deceiving at best. Now Apple actually supports a legitimate log in their camera’s with actual dynamic range improvements and much less of a “baked in iPhone look”. So you’re much better of buying an iPhone that supports log and use a free app to lock white balance and exposure. Filmic pro switched to a subscription model and as a former paying customer I’m offered an outrageous “deal”, paying €2,5 per week, €130 a year which is totally unacceptable!
There is NO use for this app. None! Save yourself the trouble, time and the money because other reviewers also have pointed out how unreliable some of the features work in real life.