Osmolog - Language Immersion Tracker

Track active and passive immersion across video, custom websites, and Anki reviews, with no account required.

See how much language immersion you actually do. Osmolog automatically tracks active and passive immersion while you watch or listen in your target language. Start playing something and tracking begins—no button to press and no stopwatch to forget. If Osmolog cannot identify the language, it asks you once and can remember your choice for that channel or series. WHAT YOU GET • Automatic tracking for supported video and audio playback • Separate active viewing from passive background listening • Track multiple languages without changing a global setting • Set daily, weekly, monthly, and yearly goals • Build streaks and view your entire year on a visual calendar • Discover your top platforms, channels, artists, and shows • Add reading, podcasts, tutoring, conversation, gaming, and offline study manually • Import Anki review time and explore vocabulary, retention, workload, deck performance, streaks, and recent activity SUPPORTED SERVICES YouTube, Netflix, Twitch, and Crunchyroll are supported. Additional experimental integrations can be enabled from Allowed & Blocked. You can also add custom video websites individually. Osmolog requests access only to the websites you choose. If a website cannot confirm its language, your selected language is clearly marked as manual. ANKI ANALYTICS Connect Anki Desktop through the Osmolog Connect add-on to track review time, vocabulary growth, retention, answer ratings, upcoming workload, deck performance, and study consistency. PRIVATE BY DEFAULT Osmolog works without an account, and detailed history stays on your computer by default. Chrome Sync can keep your lifetime active and passive totals synced for each language. You can also export your complete history as JSON. No ads, ever. Product analytics remain off unless you choose to enable them. Built by a language learner who was tired of guessing how much immersion they were actually getting.