Dynaway consists of two elements - Dynamics 365 for Finance and Operations part and Dynaway Mobile which is deployed in Microsoft Azure.
In Dynamics 365 for Finance and Operations, Dynaway version can be found in a following way:
Click
in the upper right corner of Dynamics 365 for Finance and Operations screen

Click 'About'

Select 'Version'

Scroll down under 'Installed models' until you reach the models named 'Dynaway*'

Version number 2201.0* indicates the installed Dynaway version.
Dynaway versions follow the calendar meaning that 2201.0* implies January 2022.
In Dynaway Mobile, Dynaway version can be found in a following way:

Click 

Scroll down to 'System'

Version number 2201.0.1 indicates the version number of Dynaway Mobile.
Please note that the first four digits - 2201* - in Dynamics 365 for Finance and Operations and in Dynaway Mobile must be the same.