Facebook has announced the App Center, a new place for find high quality apps.People will able to access the App Center on the web and in the iOS and Android Facebook apps.This gives developers an additional way to grow their apps.
Eligibility for apps:
An app on Facebook.com in a canvas page
A mobile app built for the web, iOS or Android that uses Facebook Login
A website that uses Facebook Login and has an immediately logged-in, personalized experience
An App for Pages built to manage or enhance other companies’ Facebook Pages
App Center Guidelines
App Center Tutorial