<p>Yesterday, I wrote about Tempo, a replacement for Apple's Calendar app on iOS. Today, I want to continue that theme with a replacement for Apple's Contacts app. (Image: Addappt)</p><p>Addappt (free, App Store) is a contact management app for iOS that's always up to date because it's maintained by your friends and colleagues. It's an amazing app (and one of my iOS picks of 2012) that allows you to keep your contacts current, and now it allows you to share in ways that you can't with the Apple's native iOS apps.</p><p>When you install it, Addappt scans your contacts and tells you if any of your contacts are using it. Then you can invite the contacts that you want to keep up-to-date information on. It's completely opt-in, so the recipient needs to confirm your request and verify their email address.</p><p>If someone's not already in your imported contacts, you can just add their email address and tap invite. The person will receive an email invitation asking them to join Addappt. If they accept and install the app, you'll be linked to them and their contact information will get updated any time they make a change. And vice-versa.</p><p><a href="http://www.zdnet.com/addappt-1-3-is-an-ios-group-messaging-powerhouse-7000013167/">Keep reading...</a></p>