The course navigation links may include links to external tools [1].
The Attendance tool allows teachers to use their mobile device to take roll call for a course [2]. The Attendance tool displays functionality that has been developed specifically for the Teacher app. All other external tools will display the same functionality as seen when used in a web browser.
Note: The external apps displayed in the Teacher app will vary based on the external apps enabled for your institution or course. For assistance with external apps, contact your Canvas administrator.