Do you know of any app that cleans blemishes off from old photos automatically?

I’ve been using iPhoto software to digitally erase dirt and blemishes like unwanted streaks from mostly old scanned and now digitized photographs.

I understand that photo editing apps / software gives you the capability to clean photos but I’m interested in a software that would not require me to do this manually. Erasing so many dots, streaks and blemishes that takes an hour to finish a single photo. And I have a few hundreds to clean.

Is there any software out there that detects blemishes and restores the photo with one or two pushes of a button? Or am I stuck spending days doing this? Thank you.