Awesome. I look forward to what kinds of changes are coming.
HeartWatch has hands down been my favorite Watch app for over a year. I just love data. I use it every day.
AutoSleep I also like, but I'm slightly underwhelmed by it. As many others have mentioned I think the UI could use some work, it's complicated with a lot data (it's gotten better, I've had it since day 1), but worst of all the sleep data hasn't been the most accurate for me (some of it has been odd glitches and some is just expected behavior).
The accuracy thing is definitely difficult because your arm can move a lot even if you're sleeping and your arm can be still even if you're lying awake. So I understand that. It could probably be more accurate if it could read data from a watch on each wrist.