Hi Erian,

There is currently not a way to download quizzes, only videos through the apps. Khan Academy recommends using Kolibri (which allows you to watch videos and complete exercises) if you are wanting to use it in a permanently disconnected environment, as instructed here: https://support.khanacademy.org/hc/en-us/articles/202487370-How-can-I-use-Khan-Academy-without-an-internet-connection-.

I hope this helps! Please let me know if you have any further questions.

I can't thank you enough for informing me of Kolibri's existence!