That extended version removes adds and allows you to add a nice widget to your home screen. This is a Native Android Application that helps you to access to all the content of the Watchtower Library (2000 - 2012) for Jehovah's Witnesses available on www.jw.org The app works fine on mobile phones and also on tablets. This App needs your InternetData Connection to work.So please make sure that you will turn on your Mobile Data Networks or 3G or WiFi . Note: This app does not store any material or content. It doesn't share, publish or modify the content which is available in online watchtower library. It is just tool that is specially designed for accessing Watchtower Library Online. You will not have to download or save any file, all the content is directly viewing from jw.org (Official Web site of Jehovahs Witnesses). This is not a Watchtower official app