tl;dr: The app+watchface are exactly what I was looking for. I ran into some bugs, but the dev is extremely responsive. || This is the only app+watchface I've found for my Garmin that shows me at a glance a significant number of calendar events AND all of the items typically shown on a Garmin. And without being cluttered or unreadable. 4 stars for the app because I had some issues getting everything to work together. I feel like using the app could be a little more intuitive, also. However, 5 starts for the dev who was very responsive and spent more than a fair amount of time trying to resolve things for me.
- no calendar data issue fixed
Garmin Pilot is the most comprehensive suite of aviation tools for Android.