In early 2020 I built a real-time planning poker app over a weekend, almost by accident. Six years later, 147,000+ people use it every month, including teams at Google. This is a story about Firebase, Hacker News, a €60k mistake, and what I'd do differently if I started today. Especially relevant if you're building a SaaS in 2026 and worried about LLM-era discovery. The 2020 origin In 2019 I was working as a frontend developer in a distributed team. At the start of every sprint we would always do the same estimation meeting: how many difficulty points each task should have, how to split them, etc. The "sprint planning meeting". To not influence others, each team member has to say their estimation secretly, and on the count of 3 we all show our estimations and discuss the results. But… how do you do that in a video call? Those sessions felt quite unprofessional and boring. To cast the votes we all wrote our estimations in the meeting chat at the same time.…