Right now, ubports does not support very many smartwatches. Pretty much only asteroid os watches through the Telescope app.
Amazfish is a sailfish os app that connects amazfit, mi band, and pinetime watches to your phone. The source is here: https://github.com/piggz/harbour-amazfish
According to https://github.com/piggz/harbour-amazfish/issues/119 all that it needs is a ubports specific ui since the daemon is separate. Would someone be willing to port it to ubports?
@qiangong2 Why not try yourself I'm sure if it is possible someone will be able to point you in the right direction.
@Lakotaubp Unfortunately, I don't know anything about app development specifically and how to recreate a UI. I can build Halium and troubleshoot it, but apps are higher level than I am comfortable with. I could probably code a sub-par gui with Rexx if ubports ever supported it