Hi Issa,
Synegen has developed a mobile app for iOS and Android to offer support of most Totara course activities and full course progression including offline access to content. Here is a link to a video demo we provided to the Totara Partner community https://www.youtube.com/watch?v=OobzxN-Kjc8&feature=youtu.be
Please feel free to reach out if you would like to learn more. jason.miller@synegen.com.
Thank you,
Jason