content: A solid and well known app this is a great option for almost anything you may need to do. Good rendering nice view options good annotations and good form filling. Im only giving 4 stars though for two reasons 1 It feels a little dated and cumbersome. I get the feel while using it that the design and flow of the app is in need of an overhaul 2 There are some features missing from this app that are available on a WindowsMac if you have a premium subscription.