watchOS Alternatives

Say hello to one of the world’s leading apps for health and fitness. Use the Fitbit app on its own to track basic stats and stay motivated on your journey. Or, get a Fitbit tracker or smartwatch to see how your activity, workouts, sleep, nutrition and stress all fit together.

AsteroidOS is the open-source operating system for smartwatches with an active development community and growing list of supported watches.

Wear OS is a version of Google's Android operating system designed for smartwatches and other wearables. By pairing with mobile phones running Android version 4.4 or newer, or iOS version 9.

InfiniTime is an open source firmware for the PineTime smartwatch. It is written in modern C++ and based on FreeRTOS.

Participate in walking challenges to plant free mangrove trees, which store four times more carbon than rainforests. Track your steps with a phone or fitness device and help reach the target of planting 5 million trees in Madagascar for environmental conservation.

Wasp-os (Watch Application System in Python) is a firmware for smart watches that are based on the nRF52 family of microcontrollers, and especially for hacker friendly watches such as the Pine64 PineTime.

Espruino is a JavaScript interpreter for microcontrollers. It is designed for devices with as little as 128kB Flash and 8kB RAM.

Use the Apple Watch app to pair and sync your Apple Watch with your iPhone. Customize your watch faces and app notifications, choose and arrange the apps in your Dock, select photos and music to sync, and more.

This app integrates the Casio G-shock square digital Bluetooth watches (B5600, B5000 series), with Google services such as Google Calendar events and Google Alarm Clock. It also works as a remote control for your phone. It is not meant to replace the official Casio app.