MoodleBites courses are designed to be highly-accessible by a variety of devices, including mobile devices.  However, as a general rule you will need to use a Desktop or Laptop computer.  It is of course possible to use Tablets and Smartphones to access Forums, view Grades, etc.  However, as these courses are for Teachers / Designers / Administrators / Developers you will need to use a full personal computer for many parts of the course.