content: Wonderful app since the one my android phone comes with is trash. It has removed my place when I go back to a pdf I was looking at very rarely but thats the only real issue. Two tips I have to make a folder in your downloads for all your pdfs it will save the app time having to look through everything to find them and the other is to search under This Device when trying to find your pdfs. Other than that its a great app and I recommend getting it.