Kartii is available on both App Store and Google Play markets.
Yes, visit www.kartii.com
You can utilize all the mobile App features through the website including, Edit Business Card, Add Contacts, Organize Business cards Tree, Schedule Meeting and more
Yes, you can switch between different home pages options, including My Contacts and My Card and Home from the Settings page
Yes , go to the Settings page and switch your profile to private.
Yes you can with MS-Outlook and Google Calendar, go to the setting page and add your MS or Google account.