Username checks out.

Those are clearly line segments, not planes. /bad geometry joke

My partner loves it; I have not been willing to change my habits to use it.

One thing that I appreciate about them as a business is that if you don’t use it for a month, they don’t charge you. The subscription stays active, but doesn’t cost you anything until you start using it again. Makes it a low-risk subscription to get! (Please confirm they still do this, but it is how it worked when he signed up!)