Open the project file in Xcode. At the bottom of the Summary tab, within linked Linked structures and libraries, you can see which libraries you are linking to. The frames are in order, you dynamically communicate with them, since their binary file is already on the phone. But you can also find here static libraries (with the extension .a) that are "copied" into your application bundle. This is called static linking. Therefore, they will make your bunch thicker. On the "Phase Assembly" tab, you can see which source files you are compiling and, thus, linking in your binary format, they make another part of the compiled program code. The rest of the package is resources, images, etc., but I think you already checked that.