Unfortunately, this app is nowhere near as intuitive or useful as Combine PDFs. Geranium has a window where you can drag files into it & merge them. I grabbed 2 pdfs & it wouldn’t accept them. I dragged them individually, and both were pushed into another window, persumably for my review.I then clicked on the MERGE button, believing I needed to merge them, but the next window requested that I add another file. WTH? Then, I clicked DESTINATION, thinking I made a mistake & needed to tell the program where to place my new combined pdf. But NO, not the case. It did the same thing as the MERGE button. Useless. I don’t like the Acrobat PDF merger either, but it’s better than this app.I’ve already requested a refund.