The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From ATPATH Technologies Limited:
ATPATH MobileWork is the state-of-the-art mobile BPM (Business Process Management) workflow application that connects Internet mobile users with the ATPATH BPM Server to form a work collaboration community. It gives mobile users the ability to participate in BPM workgroup with full capability of approval review, work status monitoring and process step auditing details. All users around the world of different countries are encouraged to create approval-based business BPM applications on the ATPATH BPM Server community website taking full advantages of Internet work collaboration environment linking different work colleagues and friends in a truly virtual work team with unlimited resources.