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)
Lefun Health - Lefun Health is one of the best health companion app featured with a pedometer and heart monitor that continually calculates your heartbeat and total steps throughout the day.
InfiniTime - InfiniTime is an open-source, C++-based firmware OS specifically made for 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.
InfiniLink - iOS Companion App for InfiniTime and the PineTime smartwatch
Amazfit GTS WatchFaces - Amazfit GTS WatchFaces is an app that allows you to access new and beautiful watch faces for your smartphones.