A web-based Life Counter for Commander with real-time sync.

I created a simple web-based life counter that multiple players can access simultaneously via Firebase. The total life count syncs in real-time across all devices, so you no longer need to ask, "Um, how many lives do you have?" And you won't need to constantly search for a better app.

It works perfectly on mobile browsers as well. The tutorial and code are available for free on Ko-fi, so please check it out if you're interested!

https://ko-fi.com/post/Fast-Customizable-MTG-Commander-Life-Counter-Op-M4M81YFAVI

I'm Japanese and not very confident in my English, so I don't know what to do next, and I might not be able to reply to comments.