Hey there! Though I don't use too many apps, there are some that I love the most as they use the possibilities of my iPhone to the fullest. They are: Spyglass gps app. It uses augmented reality and looks amazing, like a pilot's HUD in a ****pit. it’s a great navigational toolkit for different purposes. You can use it as a waypoints tool, sextant, compass, rangefinder, speedometer, inclinometer and more. Very cool. Google translate. Though the app needs some polishing, it's still great for translating foreign signs, a menu or smb's speech. Wi-Fi Finder. You know, it's a necessity Evernote. It's really necessary if you have a lot of daily information to deal with. I do not mention the apps that everybody has, like Instagram, Facebook, Skype and game apps. And what's your list of favorite and most useful apps?