Been using it for a year now and its been working great. One of those set it and forget it apps.
update: just got myself out of a jam. turned on emergency mode, got a photo of the jerk and got the phone back as soon as he realized what happened.
tldr: turned on emergency mode, then turned on alarm, got a photo, got the phone.
ps: I love the email you get when it snaps a photo. It attaches the photo in the email!
Nimanna about Device Locator