I haven't tried it yet, I just found out about the project last night.
I hope someone would make a package for yunohost so I could easily self-host it 🤞
I've been using xBrowserSync for a few years now and it works great. It's open source and you can find both their API, mobile app, browser extensions in their GirHub repo and you can self host.
I have Serverless implementation of xBrowserSync API in both AWS and Azure.