Google Apps Device Policy (Android) - Google Apps Device Policy is a device administration tool that allows administrators for Google Apps Premier and Education editions to set security policies for Android devices. This application will allow your Android device to comply with the security policies set by your admin
Google Authenticator works with two-step verification for your Google Apps account to provide an additional layer of security when signing in. Use Google Authenticator to generate verification codes directly on your mobile phone, without the need for a network connection.
Note: two-step verification is available for Premier and EDU Google Apps customers at this time
Google Authenticator (Android) - Google Authenticator generates 2-step verification codes on your Android phone.
With 2-step verification, you can choose to add an additional layer of security for your Google Account by signing in with both a code generated by this application in addition to your password
Google Authenticator (iPhone) works with two-step verification for your Google Apps account to provide an additional layer of security when signing in. Use Google Authenticator to generate verification codes directly on your mobile phone, without the need for a network connection