I'm new to iOS. I need to create a small app that allows registered users to share particular data between them and I'm looking for the best solution. I know I could create a server, which handle user authentication, pushing notifications and sharing data between them, but maybe there is a simpler and better way. I saw iOS 8 introduced CloudKit, but I haven't a chance to test it. Do you think it could meet my expectations?
Thanks for help.
You could take a look into Parse or other same services.
CloudKit on the other hand also has capabilities that you are looking for. But this would not be available in versions below iOS 8
CloudKit provides you with Authentication, private and public database, structured and asset storage services - all for free with very high limits.
来源：https://stackoverflow.com/questions/26014020/ios-8-data-sharing-between-users