There will be a Mac build coming right here to itch.io around late September, so keep your eyes peeled! Or if you want a reminder, you could wishlist it on Steam (even though it will only be available for Win and Linux there) and as soon as it's released you will get an email letting you know it's available already, since we plan to release both at the same time: https://store.steampowered.com/app/1603980/