I think those apps are totally creepy.
And just a heads-up, if he has access to your phone (which he probably does, unless you shower with it), it's not that difficult for him to install an app that you wouldn't even know was there and running. I train on stalking, so I know these things exist. There are even apps that turn your phone into a microphone without your knowledge, that allow him to track everything you do on your phone, etc. I'm not saying he WOULD do that, simply that he COULD do that.
In an emergency situation, the police are able to locate you using your phone without having any apps running. I sure as heck wouldn't allow anyone to track MY whereabouts.