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AsteroidOS Sync

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Synchronize the time, notifications and more with your AsteroidOS smartwatch.

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Table of Contents

About The Project

AsteroidOS is an open-source operating system for smartwatches.

Freedom & Privacy

We believe that when it comes to wearable devices, users should have full control over their machines and data. AsteroidOS has been created from the ground-up with modularity and freedom in mind. For this reason, it is a free and open-source project.

Ready for your wrist

AsteroidOS unleashes the potential of your watch with up to 48 hours of autonomy and a set of apps including everything you need on a smartwatch: an agenda, an alarm clock, a calculator, a music controller, settings, a stopwatch, a timer and a weather forecast app.

Proven building blocks

AsteroidOS is built upon a rock-solid base system. Qt and QML are used for fast and easy app development. OpenEmbedded provides a full GNU/Linux distribution and libhybris allows easy porting to most Android and Wear OS watches.


Since its creation in 2015, AsteroidOS has been led by Florent Revest, but is open towards external contribution and collaboration. The project is still in active development and if you want to help, make sure to check the Get Involved page.

Getting Started

AsteroidOSSync can be downloaded from f-droid here

If you don't have a device running AsteroidOS, instructions for installation can be found here

Development Instructions

To get started with a developing for AsteroidOSSync, fork and clone the project, and import into any Android IDE.


See the open issues for a list of proposed features and known issues


AsteroidOS is driven by a vibrant community. We would love your help!


General discussions around AsteroidOS happen on the #asteroid IRC channel on Freenode. Logs are available here. If you don't have an IRC client, you can use webchat.