They generate your privacy policy/terms of user automatically and are a lot cheaper than a lawyer.
Does anyone have experience using them? Or advice?
IANAL, but this has worked for me in the past and when I had enough resources I had an attorney go over it all for me. The only time I can think of right now where I'd not launch without a legal review first would be if my software/solution was in a high liability area. e.g. if it managed peoples bank information, or health care data etc.
*edit fixed a word
Every time I've used attorney's where we had to produce documentation they either took a prior case pleading and copied it, or they used one of the services that produces the template pleading and then just modified it.
They also happen to be a legal services provider, so I don't know if it's standard practice, but it's maybe one other alternative to think about.