Crashes & autofocus issues

Purchased this app based on various web sites recommendations. Sounded like a great app for what I wanted to do, but I guess it was a paid advertising cause none of the reviews mentioned any of the issues I faced. After using it for a short while, heres what I discovered using this app on my iPhone 6 Plus:
- terrible and unreliable autofocus. It pretty much ruins the whole shot getting in and out of focus and searching for the proper focus continually. I understand that one can adjust the focus manually but I dont want to do this all the time. Id rather concentrate on framing a shot properly than chase the object with the focus reticle.
- app crashes often when iPhone is put in sleep mode. You wake up a phone hoping to capture that precious moment only to find that you have to start the app again which by the way takes quite a while.
- user created preset did not get saved. I set up all the settings the way I wanted and saved it as a preset. Next time I loaded the app, the preset was nowhere to be found.
I used the native Apple camera app and had no issues at all.
What I liked:
-ability to change aspect ratio for your video
- lots of settings and adjustments for users
Overall impression is: great idea, poor implication, definitely not worth its price. I cant rely on this app completely until all those issues are fixed.

MishSh about Filmic Pro－Video Camera, v5.3.1