For me, everytime I hear the word 'lawyer', my mind immediately jumps to expensive-and-bills-by-the-minute. No offense is meant to attorneys here. Its just that, as a start-up, money (and runway) is always top of mind. And attorney fees are an easy way to burn runway. So any chance I get to save money, makes me happy.
So both of these services are providing quality product for free. What's the catch. Well, both of them are offering the free service as a part of upsell to a paid service. Rocket Lawyer's implementation was the more annoying of the two. For them, I had to sign up for a one week trial of their free service and give them my credit card info. This was not clear in the beginning and was slapped at me at the end of the process.
So, there are easy and free ways out there to some of your legal boxes checked off.