If you had written "drives" it made a little sense.
But no, no app does that so maybe the best thing is for you to research how to write apps for your Apple and then you'll have exactly what you want.
So, my problem is very simple. I like organizing my things by tagging them. I like photos. I have a lot of photos that I took in 2 different external drivers. I can't combine those two. I can't put all of my pictures in my laptop. I want to organize those pictures. I want to put an driver in my usb and the app/software just organizes the pictures from that driver, than, when I plug in another driver, I want the pictures from the last driver out and the pictures from the connected driver in. Any suggestions? It can be for windows also.