The Download Now link directs you to the Windows Store, where you can continue the download process. You must have an active Microsoft account to download the application. This download may not be available in some countries.
From Softikus Worx:
Contact 7 provides an overview of your contacts, which you can create, edit, extend, group, share and save. Write messages, e-mails, phone, display contact addresses in the Maps app, open web and social media pages in the browser. Control the app via voice commands. Search for any text in your contacts or filter them by initials. Enter birthdays and other important dates, and there will be shown a notice in the overview 2 weeks before the date. Would you like to hear your favorite sounds and songs as a ring tone, add them just to the contact. Export and import contacts as business cards and table.