Beside using this app as intended, I use it as a photo editor, I look at my images in the Image Full Screen mode, on my 20 inch monitor I can really tell if the image is worth keeping or not. With ease I roll through a folder full of photos. I love it.
Give it a try. Someone mentioned in an other review that it does not work on multi platform. It does, on my Mac I created a Window version of the slideshow and it worked perfectly on the PC. This app does well what it does.