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 Peavey Electronics Corporation:
Control your Peavey MediaMatrix / NION system from your iPhone, iPod Touch, or iPad. NWare mobile brings Peavey's powerful Kiosk technology to iOS. The look and feel of the screens are fully customizable through the use of the complete set of NWare graphics tools. Interface elements include re-sizable faders, buttons, knobs, meters, LEDs, bump panels, text labels, and bitmap backgrounds. Control and monitor any aspect of your audio/video system such as volume, source selection, EQ, presets, amplifier status, and faults. Any number of pages of controls can be created, and any number of NION systems can be discovered and accessed. Access can be restricted through the use of PIN codes. ***IMPORTANT***Note that NWare mobile is designed to work in conjunction with NWare (for development and testing) and nControl/nTouch180 (for installations). An nControl or nTouch180 is required, this software WILL NOT work in an installation with just NIONs.