unique Apple vs Android app suggestions

Hi, I was almost set on a Note7 (I have a Note4) but now I'm debating between a S7 and iPhone7+.
Beside the included applications present on each device (which I know very well), can you guys name a few apps that you can't live without that are unique to that platform (iOS or Android).

I don't have specific needs but I'm a photo editing nuts.

I do have an iPad and macbook. I use the ipad to read books, plex, youtube, vlc.

thanks