Is Rent to Retirement legit?

[Kyle Nichol]

New to investing and plan to purchase my first multi-family in the next 12-15 months. I came across Rent To Retirement during a property search here, and it seems that they are "preferred vendor" (for lack of a better term) on BiggerPockets? I ran their numbers on the property I found through the BP calculator. It was the first one I've ever done, so I likely made some errors.

My questions are...is Rent To Retirement a legit, reputable firm? It seems like they receive some good reviews. How valid are the numbers that they post on their property listings? Thanks!