Like Project Editor on iOS, this App helps keeping everything together. Electronic Project Editor is not just another circuit drawing tool. Once a drawing has been created, components can be maintained by using Octopart to browse for the specifications, part numbers or datasheets. Those datasheets will then be part of the project along with other documents, Images, Website links and your notes.
Everything will be saved in a single file which is compatible with Electronic Toolbox and RF-Toolbox for iOS.