Seeking feedback on growth-hacking service

Hi,
Does anyone here has experience with Growth-Hacking.io or similar service and could provide feedback?

I saw the other day a lifetime deal on it on dealify and it made me curios as the price is a temptation and I am usually not a price first person. Also I try to avoid services that don't have a free trial, so I wanted to ask for your feedback first.

I am new to that field and would like to learn more about ways to connect with prospects without spamming. I am also open for other recommendations.