Main thing for me is separate tab management so I don't have to keep them in my browser. But the app also has preview-on-click and a handy navigation bar.
It's open source on F-Droid, doesn't require login or have any ads - and in cases like that I prefer an app over mobile site anyway.
I'm glad to hear it went well! Now that you got the boost, how do you plan to carry that momentum forward?