A Comparison of Distribution Channels for Large-Scale Deployments of iOS Applications

When conducting mass participation trials on Apple iOS devices researchers are forced to make a choice between using the Apple App Store or third party software repositories. In order to inform this choice, this paper describes a sample application that was released via both methods along with comparison of user demographics and engagement. The contents of these repositories are examined and compared, and statistics are presented highlighting the number of times the application was downloaded and the user retention experienced with each. The results are presented and the relative merits of each distribution method discussed to allow researchers to make a more informed choice. Results include that the application distributed via third party repository received ten times more downloads than the App Store application and that users recruited via the repository consistently used the application more. DOI: 10.4018/978-1-4666-2068-1.ch014