Google Inc. (NASDAQ:GOOG) has updated the iPhone applications Places and Latitude. Google Latitude is popular for its check-in services and Google Places is now available in 30 different languages.

Google Inc. (NASDAQ:GOOG) said that for the 10 million people that use Google Latitude, there is now a check-in feature on the Android. You can use Latitude to automatically update and share your location. Check ins add a certain context to the location you are at such as captions to a photo. Google Latitude will send you a notification when you arrive at a nearby place so you can easily check-in. Below is a video demo:

On December 8th I wrote about how the Google Latitude iPhone application will be releasing soon. Today Google has officially announced the Latitude iPhone application. The Google Latitude iPhone application shows you where your friends are on a Google Map. Between Android, Windows Phone, BlackBerry, and Symbian there are about 9 million mobile Google Latitude users. Check out the video demo below:

Google Inc. (NASDAQ:GOOG) is releasing the Google Latitude iPhone application very soon. The Google Latitude app was released briefly on iTunes Japan, but was removed. It sounds like it was added prematurely, but should be coming back again soon to all the iTunes markets. Google Latitude will let you see where your friends are on a map. You can also share your location with anyone you want. [TechCrunch]

Google Inc. (NASDAQ:GOOG) has improved Google Maps for Android version 4.3.  Google Maps for Android now have train schedules and the ability to find friends on Google Latitude.
Reviews are built into Google Maps now too.  So if you search for a restaurant, you can tap on it and read what people are saying about the food, service, selection, and atmosphere about that particular place. [Google Mobile Blog]

Google Inc. (NASDAQ:GOOG) has launched APIs for Google Latitude. Users will specifically need to allow Google Latitude access to an application before using the service. Some of the ideas that Google threw out there for applications that can be built on top of Google Latitude APIs include:

Google’s Steve Lee announced at the Web 2.0 Expo that Google’s location-based service Google Latitude has 3 million active users. Currently the service can show where a Google users is on a Google Map and there has been hints of adding a check-in feature. About 8 million people signed up upon launch. Google Latitude has grown 30% per month every month in the past year. Over 10% of all Android users are using Google Latitude. Steve Lee said that one of the reasons why Latitude did not take off was because there wasn’t very good iPhone support. [TechCrunch]

This is a bit surprising considering some people consider Google Latitude to be an invasion of privacy.  The service basically reports where you are located on a Google Map by reading your IP address or your mobile phone location.  Vic Gundotra stated that “more than a million” mobile subscribers signed up for the service within the first week of launch.  Google launched Latitude in about 27 markets around the world and supports multiple mobile platforms.  The service launched on February 4.

Using Latitude, you can monitor the status of your friends in real-time, chat with them using Google Talk, or call them through the user interface.  One of the limitations of Google Latitude is that the IP address location isn’t always accurate.  For example, my ISP is based in Detroit so it will report me as being there instead of in Ann Arbor.  Regardless, one million within one week is definetely bragging rights for Google.  If you haven’t signed up for Google Latitude yet, check it out here: http://www.google.com/latitude/.