Google Latitude Replacement

For Android

Hemisphere
https://play.google.com/store/apps/details?id=com.howettl.hemisphere&hl=en

F-Secure Lokki
https://play.google.com/store/apps/details?id=com.fsecure.lokki

For Iphone

Glympse – Share location with friends
https://itunes.apple.com/gb/app/glympse-share-location-friends/id330316698?mt=8

Footprints
http://www.footprints.net/