Do I need Cydia? The answer for this question you will get it in form of other questions more like…Are you tired and want a new appearance for your user interface? Do you want to install themes, change the color of your background? Do you want to create custom ringtones? Install cool that control your device by voice? If you answered to all these questions with Yes the answer for the first question as you guessed it is Yes. Cydia is a management system designed and created by Jay Freeman for mobile Apple devices.
To install Cydia you must first jailbreak your device. For those how do not know why you must jailbreak any iDevice, well is because you can not install any third-party apps. To remove this limitation you must jailbreak and as a bonus you will remove other limitations too. With Cydia you can manage other third-party applications or packages. To jailbreak an iDevice you can use any jailbreaking tool or an online service. If you do not want to spend any money I suggest a jailbreak tool like JailbreaAk!, redsn0w, Absinthe or Greenpois0n. These are commonly used by users around the world. Jailbreak is an easy process, with a good tutorial you can jailbreak any device within minutes. After the process finishes some jailbreak tools will ask to download and install Cydia.
After the installation of Cydia you will see that you can define repositories so you can install more free apps or tweaks, but beware most of them are not trusted.
When you install Cydia you will be prompted with 3 options: User, Hacker, Developer. These 3 options have a set of filters that will aid the user with appropriate features based on his selection. If you intend to use Cydia just to install apps I suggest you choose User option.
If you want to find out more, on ClearCydia you will discover lots of great Cydia apps, tweaks, some of the best Cydia sources available at the moment and much more. If you are a tech geek and you like customizing and personalizing your iDevice so that you can brag at your friends then this is the place you’d want to be.