We just hit 50 paid customers for Jonapr.com after 2 months of launch. Personally I was hoping to get to 100 but I haven't really had time to market it that well.
This looks like a good validation for what we are doing. What makes it even more special that we built an app to help people find relevant journalists and it got no more than 10 paying customers.
And the feedback has been quite good: https://www.producthunt.com/posts/jonapr