1. PrivacyGrade: Grading The Privacy of Smartphone Apps. http://privacygrade.org/.
2. Almuhimedi, H., Schaub, F., Sadeh, N., Adjerid, I., Acquisti, A., Gluck, J., Cranor, L. F., and Agarwal, Y. Your location has been shared 5,398 times!: A field study on mobile app privacy nudging. InProceedings of the 33rd Annual ACM Conference on Human Factors in Computing Systems (CHI '15)(2015), 787--796.
3. Amini, S., Lin, J., Hong, J. I., Lindqvist, J., and Zhang, J. Mobile application evaluation using automation and crowdsourcing. InProceedings of the PETools(2013).
4. Apktool: a tool for reverse engineering Android apk files. https://code.google.com/p/android-apktool/.
5. WikipediaApp Store (iOS). http://en.wikipedia.org/wiki/App_Store_%28iOS%29.