No, not by searching the menus or examining the phone. Guardian hides the fact that the device is rooted, and a new beta feature bars root access to all other apps. This means that the phone will appear unrooted even to apps designed to check if a phone is rooted or not. Many Android users will root their own devices in any case. Rooting enables them to install apps with advanced features and to fine-tune customizations to their device. No harm will come from the user rooting the device after you’ve rooted it.
Android Call Recording Compatibility
Turn on GPS (Location Services) on older Android devices
Turn off PIN code request on Android devices
Android Device and App Specific Limitations
Android Messaging App Compatibility March 2016
How do I check the Android version?