I think it would be a big step for the PineTime to be a Bangle compatible watch. As you can see in the second link, there are several non-Bangle watches that are compatible with some applications
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Has anyone tried a way to make PineTime compatible with Bangle apps?
https://banglejs.com/apps/
https://jeffmer.github.io/WatchApps/
I think it would be a big step for the PineTime to be a Bangle compatible watch. As you can see in the second link, there are several non-Bangle watches that are compatible with some applications