I have Anti Track as part of my Avast Ultimate (Multi Device) product, the stated system requirements for which are "Android phone or tablet running operating system Google Android 6.0 (Marshmallow, API 23) or higher". Anti Track is still "incompatible" with Android 11. Android 11 was released in September 2020! The email reply I received today from Avast on this said "we will for sure consider bringing the Avast Anti Track for the devices with the Android 11 in the future". It is very annoying that Anti Track is still incompatible with Android 11 and that this is not clearly stated in the system requirement for Avast Ultimate (Multi Device).