I'm developing a smartphone application with swift(Xcode7).

I'd like to manage ranking data in the cloud.
If possible, I'm thinking of a program that stores data in a free cloud and updates data from 1st to 10th place (easy, difficult, super difficult).
Server data acquisition → comparison with local data → update if local data is higher
If you are familiar with the procedure in , please let me know if it is relatively easy to implement.

Additional
I am currently creating a simple game app with swift, set the time when the game starts
If successful, compare the time required with server data, update if time is short, and discard if larger
However, I wanted to keep the data on the server in order to display the ranking.

Can GameKit test data updates without registering with iOS Developer Program?

Note 2
I tried to manage the data with appCloud, but when I accessed it, the following error occurred, so I am checking the error
NSURLSession/NSURLConnection HTTP load failed (kCFSstreamErrorDomainSSL, -9802)