Hey, developer here. Thank you, would love to hear your thoughts and suggestions for it.
PS. Since this is brought up all the time: in case anyone wonders why this feels similar to Fathom Analytics, it is because I built the initial open-source version of Fathom too.
Koko Analytics is my attempt at a truly open-source and self-hosted tool that is easy to install (ie not just for those who know their way around a server).