Original sentence: Cydia () is a software application developed by Jay Freeman (also known as "saurik") for the iPhone OS that serves as a graphical user interface for APT, and in turn, the dpkg package management system.Repositories that are included with Cydia allow for installation of software packages in which most are available to download at no cost.The software packages are downloaded directly to an iPhone or iPod Touch device, and are located in the  directory, in the same location where "Apple native" applications are located
Edited sentence: Both free and paid software packages are downloaded directly to an iPhone or iPod Touch device, and are located in the  directory, in the same location where "Apple native" applications are located.Cydia () is a software application developed by Jay Freeman (also known as "saurik") for the iPhone OS that allows the user to browse and download applications usable on a jailbroken iPhone or iPod Touch.Cydia also includes the Cydia Store, which offers a number of applications for sale.Cydia serves as a graphical user interface for APT, and in turn, the dpkg package management system.Repositories that are included with Cydia allow for installation of software packages, most of which are available to download at no cost