It was actually written as an alternative to Fathom! My original plan was to contribute to Fathom until it suited my needs, but the Open Source version of Fathom is on indefinite hiatus and the maintainers are working on a (closed) rewrite. I decided that starting from scratch would be better, as there were some things I would have preferred to do fundamentally different. What I really wanted was to add analytics to another idea I was working on, and while it's a cool idea that everyone I pitched it to seems to like, it doesn't have any good monetisation options, so I decided to work on this first.