The Nectir app works the same way that your desktop version of Nectir does.
Use the "Directory" button to find all of the classes at your school. Search through the list to see all the public channels that are available to join.
To create a public or private channel, click the pen/pad icon in the top right corner.
To change the settings on your app, click the settings icon in the top left corner.
Need more help? Contact us by DMing @kavitta or @jordan on the app. Alternatively, you can contact us through the chat box on our website https://www.nectir.io.