I've noticed on many of my iPhone photos that especially colored buildings (many European cities have lots of sandstone colored old buildings) will add a significant tint to my photos that needs to be corrected manually, for them to look as sequential as I would like them to be. I find that the iPhone takes very good pictures... if you compensate for its shortcomings in post. I could go through each one of them and tweak the cast setting, but I find it slightly tedious when I have 100s. Are there any good apps for speeding up this process? I don't really know anything about pro photography software, but now that I think about it, I feel the constraints of MacOS Photos.