It is not cheating in daily chess. You can use the analysis board, it is not against the rules of daily chess. You can also use a physical board on which you can move pieces to your heart's content. You can also use books, opening databases or videos. Essentially any tools/materials except engines, tablebases and help from other people are fine.
If your opponent chooses not to use some or any of the above, it is their choice. It is not cheating on your part if you do use everything that the rules allow you.
I just started playing more chess, and I'm wondering if for Daily Chess, it's considered cheating to use the analysis board to test moves? Not using an engine or seeing probabilities based off of moves or anything, but just testing moves out instead of having to visualize it all in your head.
My inclination is that it's not fair. In an OTB game, you wouldn't be able to do that. But then why does Chess.com provide that option so easily? "Here's a feature, but don't use it!" For learning purposes, I like doing some of both - sometimes being able to test it on the board, and sometimes having to visualize it. But most important to me is just that both players are either using it or not using it, so it's equal. So when I get matched up with someone random, is it expected that they will be "allowed" to use the Analysis Board, or no? I could ask in the chat beforehand and try to agree yes/no, but even if someone says they won't use it, it'd be a super easy way to cheat by still using it, and Chess.com would never "catch" it because they apparently don't consider it cheating.