Software to fix cell phone losing focus

I use an old cell phone to film my flights by attaching it to my baseball hat. The camera in the phone is really good and better than most action cams. But, it loses focus of the plane a lot. So I found this free software that allows you to set the focus to infinity so the plane is always in focus. And its free.
It is Cinema FV-5 Lite found here: https://apkpure.com/cinema-fv-5-lite...id.cinema.lite or on Google Play.
The funny thing about it is the Lite (Free) version has pretty good reviews but the paid for version has lots of complaints.

Anyway, it fixed my camera issues and I don't have to buy a Gopro or knockoff.

Update 6/29: had to tape a 550 motor to the back of my cap to counterbalance the phone. It looks goofy but works great and I can even look straight up without the hat wanting to slide off my head.