Pete-
Thanks for posting. As of right now, the SharpTools for Android app only supports SmartThings. We’d like to bring support for additional platforms like Hubitat at some point in the future, but we’ve been focused on improving the dashboards and rule engine by popular user request.
That being said, there are still some options for integrating Tasker and Hubitat as noted in the following post - specifically the use of the Hubitat Maker API app with Tasker HTTP calls.