I share the same sentiment with tundratech. Please make a priority to add back apple watch support!
After being a time master user of many years, the lack of apple watch app led me review competing products that do support apple watch. After thoroughly testing them, I can confidently say Time Master is the nicest and most feature complete ios app out there simply without competition. Worktime I see as a close second, but still has things that Time Master handles better (such are the way reports for all Clients, Projects & Tasks include notes, how those reports can simply be saved into a cloud service like dropbox without one needing to e-mail it to oneself, etc).
My point being is that it will be a matter of time that your competition will catch up on what you offer, so please keep the competitive edge by catching up on what they offer, and apple watch is a big part of that.