The Mastock Forum has been designed to offer users, either Mac, iPad or iPhone the opportunity to communicate. The forum is not web based and can only be accessed from within the App. It uses the new Cloud technology brought up by Apple, with Yosemite and iOS8. Note it does NOT use any of your iCloud account quota, it uses a part of the cloud reserved to developers.
Even though the mechanism, behind the interface, is quite complex, the user interface should appear simple and fairly intuitive to anybody having used a web based forum before. It’s broken down in Topics (managed by the developer), threads, and within threads, messages (managed by users).