This seems to be a fork of OpenCamera (like the stock app, too). It has almost the same options arranged a bit different. The picture quality is comparable (because of probably exactly the same processing algorithms).
You could try sideloading a GCam port, which will be completely different. Depends on your device. I can’t say if such a port matches your needs better.
I also tried FreeDCam (from F-Droid).
Update: I just see FreeDCam has made some development since I saw it the last time. Not all is intuitive there, especially nobody tells you that there’s a full screen options panel when you swipe from the left. And it still seems to crash sometimes. Annoying is that you can’t shoot using the volume buttons, you must use the damned software button on the screen.