Starting with Chalk for Android v3.0 (Mar 2020) - Android tablets and phones we have not been able to verify first-hand can still use Chalk in an Audio/Video-only mode while allowing you to enable Full AR mode to verify compatibility yourself.
If you have a device you are interested in us verifying and supporting - let us know on our Vuforia Chalk Community site.
App Store Availability
Chalk is availble for sale and download in all countries (except for China)
NOTE: Chalk can be used in all countries or locations where public internet services can be accessed
Chalk standard user interface designed for English-reading users
Chalk user-entered data can be stored and presented back in local languages