Cydia is an application that allows you to add other applications to your iPhone, iPad or iPod touch.
A stock devices comes with many applications from Apple like: Messages, Calendar, Photos, Camera, YouTube, Stocks, Maps, Weather, Clock, Calculator, Notes, Settings, iTunes, App Store, Phone, Mail, Safari, Voice Recorder, Compass and iPod.
Cydia is similar to the App Store in that it will allow you to add many more applications such as: games, networking applications, productivity applications…etc. It also allows you to change the look of your iPhone. You can select from a variety of themes that change your icons, wallpaper, dock and status bar. You can even use an application called WinterBoard to changes things like your dialer keypad, your Chat bubbles, the color of the WiFi and Signal bars…etc.
In order to get Cydia on your iPhone, iPad, or iPod touch, you will need to jailbreak it. For instructions on how to jailbreak your device, see our f.a.q Page.