DigitalChalk does support course activity on the iPad, however not on the iPhone.

Note: The iPhone will play the video within a chalkboard element, however, the Digitalchalk infrastructure cannot track the time spent viewing the video. Our support center will not be able to support students reporting iPhone issues. Also, since the iPad and iPhone do not support the use of Adobe Flash, any course elements which contain Flash content, such as Web Archives and SCORM activities, will not be able to be accessed. If you are building content that you wish to be accessible from both computers and iPads please be sure to keep from adding any elements containing Flash content.