360Works AdminAnywhere provides Lightweight mobile FileMaker administration from a browser, no downloading required. Works on the iPhone. You can also monitor and run backup schedules, view account details and manage users, quickly view logs for a FileMaker Server running on a Mac and more. There is a demo here. For more information on the product visit the 360Works site here. The full version sells for $49.

You must be using an iPhone to see the iPhone version of this app. Try it here