SDKBOXPlay v Google Play Games Services

Noob question, sorry.

Investigating the above and I see that SDKBOXPlay integrates BOTH Google Play and Apple Game Center but with a limited set of functionality. On searching I have read the GPG Services both can and cannot be used on iOS, :confused:

Can anyone give me a simple overview of which to use? I will be targeting both Android & iOS using Cocos2d-x/C++.

Thanks

My opinion: Use GPG and just give up Apple Game Center. But in my case, it was an even harder decision: I gave up both of them.

Which library you choose determines what features you need.

Thanks,

Thanks for the replies!

doc => http://docs.sdkbox.com/en/plugins/googleplay/v3-cpp/
example => https://github.com/sdkbox/sdkbox-sample-gpg

Thanks again.

I have already downloaded the example C++ code to get me going: