jp343 Track Your Japanese Immersion

Tracking since Apr 1, 2026.

Changelog

• Jun 10, 2026
  host_permissions

  *://*.youtube.com/*, *://*.netflix.com/*, *://*.crunchyroll.com/*, *://*.primevideo.com/*, *://*.amazon.com/*, *://*.amazon.de/*, *://*.amazon.co.jp/*, *://*.amazon.com.br/*, *://*.disneyplus.com/*, *://*.cijapanese.com/*, *://open.spotify.com/*, *://jp343.com/*, *://*.jp343.com/*

  *://*.youtube.com/*, *://*.netflix.com/*, *://*.crunchyroll.com/*, *://*.primevideo.com/*, *://*.amazon.com/*, *://*.amazon.de/*, *://*.amazon.co.jp/*, *://*.amazon.com.br/*, *://*.disneyplus.com/*, *://*.cijapanese.com/*, *://*.nijapanese.com/*, *://*.nihongo-jikan.com/*, *://open.spotify.com/*, *://*.twitch.tv/*, *://app.asbplayer.dev/*, *://jp343.com/*, *://*.jp343.com/*

• May 15, 2026
  description

  jp343 is an immersion tracker for Japanese learners. It records your watch time automatically on YouTube, popular streaming sites and Spotify. Your progress is shown in a built-in dashboard with heatmap, streaks and session history.
  
  The extension runs in the background while you watch. Ads are detected and excluded from your time. If your browser crashes, the session is recovered on restart. You can also track any other site manually with one click.
  
  Features:
  - Automatic tracking on supported streaming sites
  - Block channels or titles you don't want tracked
  - Edit session titles anytime
  - All tracking data stays in your browser, no third-party analytics, no ads. Optional anonymous platform compatibility statistics help detect issues early.
  - Optional account syncs your data exclusively to jp343.com via HTTPS
  
  Built for Japanese immersion but works for any language. Whether you do AJATT, Netflix, Refold or your own method, jp343 tracks your input hours so you can see your progress over time.
  
  Optional: Create a free account to sync across devices.
  
  How to use:
  1. Play something on a supported site
  2. The tracker starts on its own
  3. Check your stats in the popup or open the full dashboard
  
  Questions or feedback? Join us on Discord: https://discord.gg/WxGtd5eNH9

  jp343 is an immersion tracker for Japanese learners. It records your watch time automatically on YouTube, popular streaming sites and Spotify. Your progress is shown in a built-in dashboard with heatmap, streaks and session history.
  
  The extension runs in the background while you watch. Ads are detected and excluded from your time. If your browser crashes, the session is recovered on restart. You can also track any other site manually with one click.
  
  Features:
  - Automatic tracking on supported streaming sites
  - Block channels or titles you don't want tracked
  - Edit session titles anytime
  - All tracking data stays in your browser, no third-party analytics, no ads. Optional anonymous platform compatibility statistics help detect issues early.
  - Optional account syncs your data exclusively to jp343.com via HTTPS
  
  Built for Japanese immersion but works for any language. Whether you do AJATT, Netflix, Refold or your own method, jp343 tracks your input hours so you can see your progress over time.
  
  Optional: Create a free account to sync across devices.
  
  How to use:
  1. Play something on a supported site
  2. The tracker starts on its own
  3. Check your stats in the popup or open the full dashboard
  
  Questions or feedback? Join us on Discord: https://discord.gg/B9kG2rGhUf

• May 10, 2026
  permissions

  storage, tabs, alarms, contextMenus

  storage, unlimitedStorage, tabs, alarms, contextMenus

• Apr 27, 2026
  permissions

  storage, tabs, alarms

  storage, tabs, alarms, contextMenus

• Apr 22, 2026
  description

  jp343 is an immersion tracker for Japanese learners. It records your watch time automatically on YouTube, popular streaming sites and Spotify. Your progress is shown in a built-in dashboard with heatmap, streaks and session history.
  
  The extension runs in the background while you watch. Ads are detected and excluded from your time. If your browser crashes, the session is recovered on restart. You can also track any other site manually with one click.
  
  Features:
  - Automatic tracking on supported streaming sites
  - Block channels or titles you don't want tracked
  - Edit session titles anytime
  - All tracking data stays in your browser, no third-party analytics, no ads
  - Optional account syncs your data exclusively to jp343.com via HTTPS
  
  Built for Japanese immersion but works for any language. Whether you do AJATT, Refold or your own method, jp343 tracks your input hours so you can see your progress over time.
  
  Optional: Create a free account to sync across devices.
  
  How to use:
  1. Play something on a supported site
  2. The tracker starts on its own
  3. Check your stats in the popup or open the full dashboard
  
  Questions or feedback? Join us on Discord: https://discord.gg/WxGtd5eNH9

  jp343 is an immersion tracker for Japanese learners. It records your watch time automatically on YouTube, popular streaming sites and Spotify. Your progress is shown in a built-in dashboard with heatmap, streaks and session history.
  
  The extension runs in the background while you watch. Ads are detected and excluded from your time. If your browser crashes, the session is recovered on restart. You can also track any other site manually with one click.
  
  Features:
  - Automatic tracking on supported streaming sites
  - Block channels or titles you don't want tracked
  - Edit session titles anytime
  - All tracking data stays in your browser, no third-party analytics, no ads. Optional anonymous platform compatibility statistics help detect issues early.
  - Optional account syncs your data exclusively to jp343.com via HTTPS
  
  Built for Japanese immersion but works for any language. Whether you do AJATT, Netflix, Refold or your own method, jp343 tracks your input hours so you can see your progress over time.
  
  Optional: Create a free account to sync across devices.
  
  How to use:
  1. Play something on a supported site
  2. The tracker starts on its own
  3. Check your stats in the popup or open the full dashboard
  
  Questions or feedback? Join us on Discord: https://discord.gg/WxGtd5eNH9

• Apr 17, 2026
  description

  jp343 tracks your Japanese immersion time on YouTube, Netflix, Crunchyroll, Prime Video, and any other site (via manual tracking). Built for Japanese learners, but works for any language.
  
  The extension detects video playback and records sessions automatically. Ads on YouTube, Netflix, and Prime Video are excluded from your watch time. If your browser crashes, the session is recovered on restart.
  
  Built-in dashboard with activity heatmap, weekly stats, streak tracking, and full session history. All inside the extension.
  
  You can block YouTube channels and Netflix/Crunchyroll/Prime Video titles from being tracked. Edit session titles anytime. No account needed. Everything works locally.
  
    Optional: Create a free account to sync across devices and keep your data safe.
  
    How to use:
     1. Play something on a supported site
     2. The tracker starts on its own
     3. Check your stats in the popup or open the full dashboard
  
  Questions or feedback? Join us on Discord: https://discord.gg/EA2A93DY

  jp343 is an immersion tracker for Japanese learners. It records your watch time automatically on YouTube, popular streaming sites and Spotify. Your progress is shown in a built-in dashboard with heatmap, streaks and session history.
  
  The extension runs in the background while you watch. Ads are detected and excluded from your time. If your browser crashes, the session is recovered on restart. You can also track any other site manually with one click.
  
  Features:
  - Automatic tracking on supported streaming sites
  - Block channels or titles you don't want tracked
  - Edit session titles anytime
  - All tracking data stays in your browser, no third-party analytics, no ads
  - Optional account syncs your data exclusively to jp343.com via HTTPS
  
  Built for Japanese immersion but works for any language. Whether you do AJATT, Refold or your own method, jp343 tracks your input hours so you can see your progress over time.
  
  Optional: Create a free account to sync across devices.
  
  How to use:
  1. Play something on a supported site
  2. The tracker starts on its own
  3. Check your stats in the popup or open the full dashboard
  
  Questions or feedback? Join us on Discord: https://discord.gg/WxGtd5eNH9

• Apr 17, 2026
  short_description

  Auto-tracks YouTube, Netflix, Crunchyroll & Prime Video. Built-in dashboard with heatmap, streaks, and history.

  Track your Japanese immersion automatically. Built-in dashboard with heatmap, streaks and session history.

• Apr 17, 2026
  host_permissions

  *://*.youtube.com/*, *://*.netflix.com/*, *://*.crunchyroll.com/*, *://*.primevideo.com/*, *://*.amazon.com/*, *://*.amazon.de/*, *://*.amazon.co.jp/*, *://*.amazon.co.uk/*, *://jp343.com/*, *://*.jp343.com/*

  *://*.youtube.com/*, *://*.netflix.com/*, *://*.crunchyroll.com/*, *://*.primevideo.com/*, *://*.amazon.com/*, *://*.amazon.de/*, *://*.amazon.co.jp/*, *://*.amazon.com.br/*, *://*.disneyplus.com/*, *://*.cijapanese.com/*, *://open.spotify.com/*, *://jp343.com/*, *://*.jp343.com/*

Permissions & access

Permissions

storageunlimitedStoragetabsalarmscontextMenus

Host access

*://*.youtube.com/*, *://*.netflix.com/*, *://*.crunchyroll.com/*, *://*.primevideo.com/*, *://*.amazon.com/*, *://*.amazon.de/*, *://*.amazon.co.jp/*, *://*.amazon.com.br/*, *://*.disneyplus.com/*, *://*.cijapanese.com/*, *://*.nijapanese.com/*, *://*.nihongo-jikan.com/*, *://open.spotify.com/*, *://*.twitch.tv/*, *://app.asbplayer.dev/*, *://jp343.com/*, *://*.jp343.com/*

Screenshots

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