... where I would be responsible for the entire journey. Not only the interface, but also the idea, product decisions, onboarding, monetization, launch, analytics, and the uncomfortable trade-offs that come with shipping something of your own. That experiment became Grindoro , an iOS focus app built around a simple idea: focusing can feel easier when it feels like you re joining other people, rather than staring at another private timer alone. It combines shared focus sessions, solo timers, tasks, progression ...