time tracking - eviltoast

I’ve been using Wakatime recently and while I like the functionality quite a bit I don’t really want to pay $15 per month to use it. It seems a little steep to me so I’m looking for free and open source alternatives. Does anyone here have one that they like?

Edit: I started messing with https://timetagger.app and writing a quick adapter to start/stop the clock from neovim. I’ve beentestingg it out over the last few days and so far, I really like it