App42 and AppWarp are different products by ShepHertz technologies.
App42 BaaS is a REST based backend which provides services such as User management, JSON Storage, Scoreboard etc.
AppWarp Cloud is a real-time socket based backend for multiplayer games which involve real-time interaction between the clients over sockets.
Cocos2d-x SDKs for accessing the backend services for both the products are available. If for example you just want to add Scoreboard to your game - you only require App42 BaaS. If you only want to add real-time interaction between players - you only require AppWarp Cloud.
Let me know if you require further clarification.