FocusOS — not just a timer, the whole focus workflow

A free, offline-first Pomodoro workspace. Plan the day, run deep-focus sessions, log what pulls you away, and get real analysis back. FocusOS learns the session length you actually finish — not the one you optimistically planned. No account, no tracking, no backend: your data stays in your browser.

• Deep Focus Mode with a full-screen countdown and picture-in-picture
• An adaptive engine that learns your best session length, break length and peak hours
• Analytics: focus over time, your best hours, mood vs productivity, distraction patterns
• A written daily reflection assembled from your own numbers, not a language model
• Tasks with priorities, categories and session estimates that drive a daily plan
• Eight ambient soundscapes synthesized live in the browser
• Nine themes, full keyboard navigation, high-contrast and reduce-motion modes
• Installable as a Progressive Web App and fully usable offline