Pros:

Rytr has perhaps the best UI out of most of these AI writing tools to show up here on AppSumo. I cannot figure out why all the other ones have such bad UI, but they do...

Rytr's results are usually more sensible then the other AI tools too. I have gotten so much unusable gibberish from WriteSonic it's ridiculous.

Cons:
Rytr is just so darn frugal with their crediting system. They credit based on characters and it seems every button you push burns through your credits. General a few sub-heading ideas, try a couple of paragraphs, check for plagiarism and you will find yourself running out of credits fast. Yes you burn up your credits/characters simply checking for plagiarism.

Not sure why they won't allow stacking, as somebody that really wants more LTD credits will just make more than one account.

In full disclosure they have incentivized this review by rewarding me with 2k credits (yay)..."click".....they are used up...sigh