Does the SRAM RED 36T Max rear derailleur work with the SRAM AXS App?

Yes, the SRAM RED 36T Max rear derailleur will work seamlessly with the SRAM AXS App. The SRAM AXS App lets you tap into the potential of your AXS-equipped bike by displaying shift settings and battery status, as well as personalized controls. When paired with a compatible head unit that is linked to AXS Web, you can view records for time spent in each gear as well as power information (when paired with a power meter).