Losant Go was actually written in NativeScript. Both it and React Native can make direct use of our Node.js API client. Currently we do not have an Objective-C or other iOS library.
The client libraries we do provide won’t necessarily help you communicate with Experience Endpoints. Our client libraries are designed around the Losant API, which is different than a custom API you’d create using Experiences.
Since every Experience API is different for pretty much every user and application, making helpful client libraries is difficult. It’s something we’ve been brainstorming on and there’s definitely some commonalities (like user authentication) that we could wrap up in a library.
For now, however, you’ll have to make the API requests the hard way.