Arthur · Immersion Tracker

Arthur — Immersion and Comprehension Tracker. Two measures of progress: hours and comprehension.

Most trackers count hours. But hours alone don't build a language, comprehensible input does. Arthur counts two things: how much you immerse, and how much you actually understand, then shows whether your time lands where acquisition happens. ____Automatic YouTube tracking Confirm once which account you're learning on, and Arthur counts every video you watch on that profile, in the background. Switch accounts freely. Only the account you confirmed is tracked. Shorts can be excluded. ____Comprehension tracking After or within a session, one question: how much did you understand? You still answer with a percentage, but each value now also carries one of six named levels: Noise, Outline, Difficult, Grasping, Flow, and Effortless, each with its own colour from red through gold to green and a one-line description. The levels put words to what a bare number leaves vague, defining what comprehension actually means at each step. It's still not an exact science, but it makes your judgement far more consistent from one session to the next, and keeps the tracking coherent as your comprehension grows over time. The dashboard shows how your watch time spreads across the six levels. It also marks the videos you've "cracked", the ones that went from barely following to understanding most of it. And once you've built up enough immersion hours since you last saw a video, Arthur suggests it for a re-watch, so you can measure how much more you understand now. ____Session timer Start a focused session in one click from the toolbar. It runs in the background. When you stop, pick a category and add a label if you want (show, episode, book). ____Manual entry Add immersion time in three clicks. Available in the side panel and in the dashboard. ____Stats & dashboard Period tiles (Today, This Week, This Month, Since Start), trend charts, a 4-week heatmap, a streak tracker, personal records, your immersion sources, top channels and videos, comprehension distribution and progress, and full session and video history. ____Challenges Set a time-bound goal. Run two at once and switch between them on the dashboard card. Each challenge breaks into stages and shows hours done, hours left, days remaining, and the hours per day you need to stay on track. ____Your data stays yours Everything stays local in your browser: no account, no server, no upload. Export as CSV or JSON, import from a backup, delete by video, channel, or time range. ARTHUR 0.8.0 — WHAT'S NEW Comprehension now has colour. Every rating belongs to one of six named levels and carries its own colour, from red for noise through gold to green for effortless, everywhere you enter or read it: the side panel, the dashboard, search, and the YouTube prompt. NEW • Comprehension in colour — Six named levels (Noise, Outline, Difficult, Grasping, Flow, Effortless), each with its own colour from red through gold to green. The level name and a short sentence show up wherever you rate or review comprehension, so a number is never just a number. • New comprehension slider on YouTube — The in-video prompt and the button dropdown now use a colour slider that follows the level as you drag it, marks the sweet spot, and names the level with a short note below. • Comprehension distribution — The dashboard shows how your watch time spreads across the six levels as a small bar chart. FIXED • Dark mode shows the right comprehension colours — The dashboard now uses the dark-tuned colours in dark mode instead of always falling back to the light ones, and they recolour at once when you switch themes. • Version in the footer is correct again — The dashboard footer reads the real version from the manifest instead of showing a stale number. PREVIOUS RELEASES 0.7.3 — Run several challenges at once · Challenge stages · The tracked account is now confirmed, not guessed · Stage days always add up · Custom stages start empty · Tooltips no longer stick · … 0.7.2 — Daily goal can now show over 100 % · Rename category slots by double-click · Shorts tracking actually works now · Watching at 1.5–2× speed now counts fully · Time is now measured, not assumed · Night sessions no longer corrupt counters · … 0.7.1 — Filter your search · Sort your search · A nod to Arthur · Timer sessions now count everywhere · YouTube UI follows your language · Clearer terminology · … 0.7.0 — Meet Arthur · Side panel replaces the popup · Rebuilt dashboard · Challenges with stages · Action buttons in the header · Keyboard shortcuts · …