RESTKIT
RestKit is a framework for using and modeling RESTful web resources on iOS and OS X. It was created for Objective-C projects, but it can also work with Swift, although it has its own powerful tools for implementing dependencies, such as Typhoon.
RestKit is a clean and simple HTTP request API that reduces the amount of code you need to solve your business problems.
RestKit includes AFNetworking, an object mapping API that converts remote JSON/XML responses into local objects, and master data for additional support. Without RestKit, your developers would have to write a lot of complicated code for all requests, and with it, the most difficult task is to install and configure the framework. RestKit does most of the heavy lifting, including integrated network operations and parsing.
RestKit is designed to be modular, and each module strives to maintain a minimum set of dependencies within the framework and with the host platform. The library is based on an object mapping mechanism that is responsible for converting objects between views. This is a convenient solution that greatly facilitates data processing and functional development in general.
After setting up RestKit, all you need to do is insert a link to the data source you are going to use, get the information in JSON/XML format, and interpret it at your own discretion. APIs usually provide a lot of different data, for example, if this information is about the nearest cafes from Google Map, you can show your users both their names and, for example, the distance in meters, and much more - user ratings, opening hours, workload, etc.
RestKit is not a required framework, but it is incredibly convenient for organizing interaction with RESTful web services in Objective-C projects. If you want to show users data from third-party sources obtained through APIs, this is one of the most convenient classic platforms. It has alternatives to solve the same tasks in other ways, but the result of their use will be the same. If your developers are used to using RestKit, you'll benefit from allowing them to use their favorite tool.