Camera / gallery apk suggestions?

Title says it all. The LG camera is OK, but do people have better recommendation?

I tested the stock apk, but that one offers no HDR and no option to save to SD card (at least on my f3).

Also tried Focal, but even though that one offers HDR and even photosphere, still cannot save to SD.

Given the lack of internal storage, saving to SD seems important.

Suggestions? Thx.