Based on our record, watchOS seems to be more popular. It has been mentiond 1 time since March 2021. 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
wasp-os - Firmware for smart watches based on the nRF52 family of microcontrollers (including Pine64 PineTime)
VeryFitPro - VeryFitPro is one of the best mobile fitness tracker apps that help you to monitor your daily physical activities and calories burned most conveniently.
InfiniTime - InfiniTime is an open-source, C++-based firmware OS specifically made for the PineTime smartwatch.
WatchMaker Watch Face - With WatchMaker you get access to 1000's of stunning watchfaces and a designer to build your own.
InfiniLink - iOS Companion App for InfiniTime and the PineTime smartwatch
Feisar Watch Face - Feisar Watch Face is an interactive mobile app offered by thema that provides you a variety of beautiful watch faces and clock widgets for your mobile phone.