Google has released Google Admin, an app to manage Google Apps users, groups, passwords, and more. The app is designed for use with Google Apps for Business, Education, Government, Google Coordinate and Chromebooks.
Admins using the app have a number of features at their disposal. Just swipe to the right to reveal the sidebar menu, with the Dashboard, Users, Groups, and Audit Logs sections. User management lets you add, delete, edit, suspend, and restore users. You can do the same with groups, as well as add members to a group, and email them all. You can also manage passwords directly from the app. Google Admin also lets you view Audit logs.
Google Admin is available for free from the App Store now.