Every Friday my wife and I do the grocery run, and for years we’ve used the classic paper list on the fridge. Problem is, we either forget it on the way out the door, or we get to the store and can’t even read what we wrote. In this video I’m showing you Koffan (I’m still not 100% sure how to pronounce it), an ultra-lightweight, self-hosted shopping list app that fixes that whole mess by keeping the list on your phone—either in a browser tab or installed as a Progressive Web App. I walk through the interface and the features that actually matter: a dead-simple single-password login for the whole household, multiple lists, sections inside lists (dairy, produce, meat, etc.), and quick add/check-off flows that are clearly designed mobile-first. The real standout is real-time sync using WebSockets, so if your partner is adding items at home while you’re at the store, you’ll see it instantly without refreshing. I also talk about the “vibe-coded” angle—Claude AI is listed as a contributor—so I share my mixed feelings and why you should consider reviewing code before deploying anything in your homelab. Finally, I cover install options (docker run, cloning the repo, or Docker Compose), why I prefer Compose in my homelab, and how tools like Composerize make it easy to convert commands into a clean stack you can manage with Portainer, Dockge, or whatever you use.