I don't save user data.
But I run the server in cloudflare and they might save (but I don't have access)
I plan to add Google analytics to analyze traffic, but I am still setting it up. I will not save user logs, but I need to capture number of clicks on ad banners.
I am still thinking about pros and cons of Google analytics. Website is getting big (almost 11k unique users per month)
If you don't have Google Analytics, how did you measure 11k visits per month?

Also, since you are already using Cloudflare, as far as I know, you have some kind of analytics with them (if you haven't already taken their results)
You should know that GA, Cloudflare and every other analytics are quite different with the delivered results. What is the most significant pros for GA is its impact on SEO optimization and you simply cannot ignore that. Of course, if you want to achieve a better position on the Google search engine.
I only recently saw that you also have a sponsor's ad on the site, things develop if you are dedicated and patient.
