Thank you for the feedback!

We got 5k+ visits and almost 700 registrations (with 20+ paid customers). We didn't buy any ads, but instead we used launching platforms like Product Hunt, organic growth, and social media (linkedin, medium, x etc.). I will probably write about it more in my next articles.

And regarding stickiness - we added analytics to our website, and right now we are experimenting with different features, designs and so on. We don't have any definite results yet, but one thing for sure - if your startup brings value and solves some recurring problem, people will return to it at some point.