Bluesky might be a bit more popular than watchOS. We know about 1 link to it since March 2021 and only 1 link to watchOS. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
You can find the list of compatible watches all the way at the bottom of this page: apple.com/watchos/watchos-7 (it's right above the SDK section) Hope that helps clear up your confusion! Source: about 3 years ago
You can favor other alternatives for ideological reasons, like Mastodon or Bluesky, but you should know that there is much less exposure at the moment, although it attracts important people in tech. - Source: dev.to / about 1 month ago
wasp-os - Firmware for smart watches based on the nRF52 family of microcontrollers (including Pine64 PineTime)
cohost - cohost is a new social media platform built from the ground up by a small team of developers and designers who like sharing things on the internet.
InfiniTime - InfiniTime is an open-source, C++-based firmware OS specifically made for the PineTime smartwatch.
Threads App - Say more with Threads — Instagram's new text app.
InfiniLink - iOS Companion App for InfiniTime and the PineTime smartwatch
Spill - A visual conversation at the speed of culture