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 Jeong JH (FMProject):
PowerContact is a most powerful contact addressbook app.It has more functions than you can imagine.(Overall what's hot in Japanese AppStore NOV/2010)** KEY FEATURES!- Contact group management (Exchange Server group management also supported)- Contact grouping by Drag & Drop or by multiple selection(including search selection).- Group mail (select TO:/CC:/BCC for each contact)- Group SMS/TEXT (from iOS 4.0)- Full color & icon group management. (not just change tab color, full theme color can be changed , user custom color supported) - Full Contacts & groups backup and restore with Wi-Fi sync - Contacts export with vCard 3.0 and CSV format (for gmail, Outlook) - Contact add with QR code- Full retina (iPhone4, iPod Touch 4G) display supported- Tab style or Bubble style theme. (small and big tab style supported)- Send contact info by (mail, sms)- Direct printing. (group or each contact, from iOS 4.2)- Search Contact (by name, company, title, etc)- Add/delete multiple contacts in groups.- Call by Skype and Facetime.- Direct share & backup each contact data by e-mail- Face CoverFlow (Just like you flip through album arts in iPod. You can flip and flip with your friends photos.)- MapOut (display each or group contact on map with face icon)** PowerContact shares Apples contact database. Therefore, you can use your current contact information without any works.**Restrictions-Bell sound change function is not offered**YouTube VideoLinkhttp://www.youtube.com/watch?v=ZqPVU2oo-C8** Support Mail (customer support or any suggestions)firstname.lastname@example.org