Seoul Metropolitan Government released i Tour Seoul Mobile application V 2.0. But This application only supports iPhone.

You can get a information about Seoul through i Tour Seoul App. Although information is not detailed yet, this app will be help you out to travel Seoul.

The Official Seoul City Tourism Website serves more a detailed information about i Tour Seoul App.

Follow this link, you can get in directly.
http://www.visitseoul.net/en/article/article.do?_method=view&m=0003001004009&p=04&art_id=41741&lang=en