What versions of xMatters for iOS and Android are currently supported?
All platforms of xMatters on Demand Web App, iOS mobile app, Android mobile app
The current supported versions of iOS and Android can be found on the respective download page of the app:
As of November 2019 these are:
Apple: Requires iOS 11.0 and watchOS 4.0 or later. Compatible with iPhone, iPad, and iPod touch.
Android: 6.x (Marshmallow), 7.x (Nougat), 8.x (Oreo), 9.x (Pie) and 10.