Minh Nguyen Hi and thanks for the feedback. I updated the link. The links are going to urls to download the apk of the apps and install them on Android phones. The apk files are executables of Android apps. We will have the apps in the store in the next month.
The following web sites provide information about the apps with a focus on the software development process.
The process to develop the apps was described here: https://github.com/paceuniversity/CS3892016team1/wiki https://github.com/paceuniversity/CS3892016team4/wiki