Macstories:
Screenshot apps tend to fall into one of two categories: managers and editors. On iOS, screenshot management apps dominate, likely because until Apple added a ‘Screenshots’ album to the Photos app with iOS 9, there was no good way to separate screenshots from snapshots of family and friends. On the Mac there are fewer apps, but their feature sets tend to be deeper.This article casts a broad net to provide an overview of the top screenshot apps on iOS and Mac and help you find the apps that meet your specific needs.
This is a wonderful ridiculously long list of a number of screenshot methods and apps. You’re sure to find one that does just what you need.