WeChat API helps developers to integrate chat services into an application. WeChat iOS SDK is available to download at no cost. We Chat helps users to find interesting content, use a share button, choose friends, and redirect users to an app. While WeChat Moments follow the same structure, the users' app sends content to WeChat servers. Installation guide available.
There are already millions of apps available that have great content, and there'll be many more to come. GROUPcentric provides a product that aims to add a new and exciting layer in social sharing functionality that allows content to be shared, not only via the large scale Facebook and Twitter options or email and SMS, but an in-application sharing service that makes it possible for users to privately share content with groups of friends that can be accessed on any app. The GROUPcentric API and SDK allow developers to integrate this functionality with other applications.