Google Latitude is available for iPhone.

Earlier this year, Google launched its Google Locator service (a post on habrahabr ). You can see the location of your friends on the map, indicate who can see you. Today, Apple iPhone access is announced at google.com/latitude (Safari supports the W3C Geolocation API).

The app was originally developed for the AppStore, but Apple asked Google to release a web application in order to avoid confusion with Google maps. (add a bookmark to the Home-screen, for this in Safari, click "+", "Add to" Home "").

The official blog says that currently Latitude is not available in Russia, although he has determined my location.