Find My is a free app that helps to block lost or stolen phones.
Lost mode  flags the device as lost or stolen, allowing the user to lock it with a passcode. If the device is an iPhone and someone finds the device, they can call the user directly on the device. Proprietary software, also known as non-free software, or closed-source software, is computer software for which the software's publisher or another person retains intellectual property rights, usually copyright of the source code, but sometimes patent rights. Proprietary licence 
