Hi @Art, good news for you. From v0.15, you don't need to pause anymore. The app will detect if you take the watch off and will not count as sleep. It is not perfect yet(sometimes sleep is registered less than it should be), but I have a newer version that I am testing that will hopefully solve that too.
The Android app should be done soon. Have been working on it for quite a while now, but it needs some more polish. Thanks for commenting and let me know how the newer versions work for you.
@"Rob Wijhenke", I understand what is happening now. The app is having trouble with interval training, as it is designed to reject short activities(the are usually caused by random hand movements).
But, I actually have been thinking of improving it lately. I have a new version I will be testing tomorrow, which should address that. If you want to help me test the new version, mail me on the developer email and I can send you a test version of the app(you will require Android to use it though). That would be a great help. Either way, expect a hopefully stable update this week.