Rather disappointed with the app mainly for its internal structure of files as mentioned here in other reviews. I still use the good old Picasa which is harder every day to maintain working and i thought this could be a good replacement. Some similarities like speed, tagging, quick filters, etc are there but the fact that it creates a duplicate and a folder of each of my images puts me way off.
With a massive library of images, that would mean straight away to have double the size of it if I want to maintain my originals intact.

The fact that each image is contained within a folder would make it impossible for me to use the windows explorer to handle my images any longer, relying completely in this app to access, export, copy, move or use any of my images. Not for me.

As mentioned, another of the great features of Picasa was the fact that images remained where you stored them and intact unless you "apply" the changes to it within Picasa while you could still tag them, recognize faces, etc.