Implementing schedule meetings & video calling for iOS App


I am working on one of iOS application where user can schedule meeting with experts & ask questions using video calling.

To implement it i have done some r&d & found GoToMeeting provided by citrixonline. They are providing open REST APIs to create meetings & for other related activities. I tried that but i found that these APIs are not mobile language supported like Objective C, Swift.

Here are links :

My Question is :

  • Is there any other library or services available which are reliable & provide best services ?

  • Can you please provide me some of the references which can be easily implemented into the iOS Application & will support Schedule meetings & video calling feature ?

Thanks & regards,