Google Latitude is no longer available Google release that on August 9, 2013 Google closed Google Latitude features from Google Maps App but Google has also announced that "Some of you still want to see your friends and family on a map, which is why we've added location sharing to Google+ for Android (coming soon to iOS)."
It means that we can't see our friend's location. with google sharing we can see their location when only they share with us but we can't see their location whenever we want. I think google share is different from "Google latitude" .
You can go with Glympse, it is good as per I have experienced. Glympse looks good, except the longest you can share your location to someone is 4 hours. But I would like to say that still there is No Latitude replacement.