GDG DevFests are a big community that organize events with sessions in all areas of Google Technologies, hack-a-thons, codelabs etc.
More information in: http://norte.devfest.com.br
With this app you can:
• Check sessions and conference agenda
• Check session details, info and bio of presenters, pictures and their Google+ profiles
• Event Location
Source code for the app is available at https://github.com/zasadnyy/iosched