Short: I would definitely recommend PrettyLitter! Controls the odor very well and it's not nearly as gross to clean out the litter box as it is with clay litters.
Long: I started out using PrettyLitter in May of 2019 for a couple of months and thought it worked really well, but the price is a little high so I switched to a couple new kinds of litter with similar promises at a lower price point. They did not live up to the odor control claim, and one was so displeasing that my cat was trying to go elsewhere in the house. After two months of exploring, I'm back to PrettyLitter, because again, odor control works really for my cat, it's lightweight, makes the litter box less gross to clean out, and my cat has no problem using it. The health monitoring is more of a benefit than the main reason I use it. It lets me know when my cat is feeling too stressed*, which happens a lot with her (she's a high anxiety tortie).
Additional Thought: The claim that their litter is less expensive than leading competitors isn't accurate. It's a pricey litter, but it is well worth the price.
*I used to think my cat had a problem with UTI's, but after finding my new vet I learned that the high alkaline urine, which usually points to a UTI, could be (and in my cat's case it is) stress related. The litter is often blue, which was alarming at first. Now I'll just look for any other color changes going forward.
Bottom Line: Yes, I would recommend this to a friend