The idea of the app is great; however, even with location turned to "Always," the Apple Watch complication still does update automatically. If they fix that issue, along with making the complication more customizable (i.e. Changing location on watch face based on time of day or current location, itll be perfect. I do appreciate that the developers seem to take suggestions to heart and quickly address.
dannykott9 about ETA - GPS & maps driving times