Stefan Esser’s iPhone app, called System and Security Info, can no longer be downloaded from the App Store, as first noted by The Next Web. Esser’s software let iPhone users know if their device had malware that could be used to spy on them, and could detect a jailbreak, too.
The app was removed from the App Store earlier this morning. Esser was basically told that detecting weaknesses in a user’s device could lead to “potentially inaccurate and misleading diagnostic functionality for iOS devices.”