A: Hey, thanks for your question. Licenses are not transferable between domains, so you would need a 3 or unlimited site license to use Microthemer on multiple domains. Here's an explanation for why from our FAQ page.

"The single/standard licenses permit installing Microthemer on 1/3 sites in total. So it's not possible to transfer site licenses between a rotating set of 1 or 3 domains. This is because it's a feature of Microthemer that you can completely uninstall it after making style edits, and still have the changes stick. See Microthemer's Preferences > Inactive tab for more information on that.

This is where Microthemer differs from most WP products - you don't need to keep it active on a domain in order to make use of it on that domain. As such, there would be little advantage of the developer license if the standard license allowed for domain transference.

Note: If you install Microthemer on a dev/staging domain, you can ask for it to be removed from your quota once the site is launched on the live domain. Just send us a quick message via our contact form."