Here's window number four of the OnSoftware advent calendar. Guess what's behind the window then click to open it and reveal the software treat behind. Clue: today it's a mobile phone app.

The program integrates a bevy of time-saving tools and features, including bookmarks, a password manager, auto-complete addresses, and the ability to save pages for viewing offline. The program now includes the 'Speed Dial' feature from the desktop version of the app, that gives you one-click access to your favorite pages from the start page - James