Exactly. There&#x27;s a linux version too, but I won&#x27;t use this because it&#x27;s closed, not because it isn&#x27;t free as in beer. I don&#x27;t like breaking my OS with crappy vendor packages that only work on half the versions of half the distros.<p>Also, the monetization strategy suggests an ulterior motive that makes it hard for me to accept the idea that this is important for my health, or public health, at face value.