It is a very good app but it can be fixed in a lot of ways. For example, nhentai doesn't work at all; Xelcx worked just fine but know when I select a tag from the menu on the left ( example yuri ) it doesn't show me the latest comics but it mixes all up, on the frist page you can find some comics but if you reload the page you will see other comics and so on. It will be nice to have all organized by relase date. One more thing, the all tags menu don't work anymore, the tags don't show up anything.
I hope this helped to find some bugs