There is an interface to Xero. If you look at the screen dump...

There is an interface to Xero. If you look at the screen dump for the Deloitte's version, you will see that it interfaces to Quicken Online,Sage One and Xero
https://www.crowdcube.com/explore/2017/12/13/propel-by-deloitte

The 9 Spokes web site does not refer to Xero but does reference Free Agent as another option. I am waiting to hear back from the company as to Xero. There may be some licencing issue around its availability from the 9 Spokes platform as distinct from Deloittes.