In this tutorial, we're going to create a dating application for iOS similar to Tinder. For voice and messaging, we will leverage the Sinch platform, making use of its powerful SDK. In the first part, we focused on the development of a RESTful API to store and retrieve user information. In this part, the iOS client will hook into this API to find nearby users based on the user's current location.
Source files for the Tuts+ tutorial: Creating a Dating Application with Sinch: Integrating Sinch
Read this tutorial on Tuts+