HitFit Pro - HitFit Pro is an app that allows you to connect your smartwatch to your smartphone and let them work together.
wasp-os - Firmware for smart watches based on the nRF52 family of microcontrollers (including Pine64 PineTime)
Huawei Wear - Huawei Wear is an application that allows you to manage your Huawei smartwatch no matter what model it is, i.e., Huawei Watch, Huawei fit, and Huawei talk band wristbands.
Wear Gesture Launcher - Wear Gesture Launcher – Wear OS – Wear Launcher that lets you forget about swiping that long of small icons, just tap, draw, and do.
Mi Heart rate - Continuous HR and smart alarm
InfiniTime - InfiniTime is an open-source, C++-based firmware OS specifically made for the PineTime smartwatch.