🧠The Vault
Your private, cloud-synced YouTube knowledge base.
Every video you save lands in your Vault — then Clarion helps you quiz it, chat with it, organize it, and sync it everywhere. Free forever; sign in only when you’re ready to save.
Not to be confused with the Library — that’s our public, curated showcase. The Vault is your own private collection.
Inside your Vault
Five ways your saved notes work for you.
Saving a video is just the start. Quiz yourself, chat with your library, stay organized, track your progress, and take it all wherever you work.
🔁Active Recall
All plansQuiz Me — turn any note into a memory test
Clarion generates 5–20 multiple-choice and fill-in-the-blank questions from any note or folder, and explains every wrong answer. Spaced repetition then moves each card through six mastery stages so the right question resurfaces on exactly the right day.
- 5–20 MCQ + fill-in-the-blank questions per note, each with an explanation
- Six mastery stages: New → Learning → Young → Mature → Settled → Mastered
- Fixed review intervals — 1, 3, 7, 14, 30, then 60 days
- Quiz a single note, a whole folder, or any selection
- Free: one quiz a month · Pro & Premium: unlimited
💬Chat with your notes
Pro & PremiumAsk Vault — answers from everything you saved
Ask a question in plain language. Clarion retrieves the most relevant notes from your Vault, answers in your own words, and cites exactly which notes it drew from — so you can always trace the source.
- Retrieval across your most relevant saved notes
- Inline [1][2] citations back to the source note
- Multi-turn conversation that keeps context
- Pro: 50 messages a month · Premium: 500
🗂️Auto-organized
All plansSmart Folders — filed for you, the moment you save
Every note is auto-tagged into one of 15 topic folders the instant you save it — no manual filing. Filter to a folder, quiz everything inside it, or bulk-rename a topic across your entire Vault.
- 15 auto-assigned topic folders — Academic, Tech, Travel, Finance, and more
- One-click filter to any folder
- Quiz an entire folder in a single tap
- Bulk rename, move, and delete across notes
📊Your progress
All plansLearning Stats — see how you actually learn
A full dashboard of your learning: current and longest streaks, a 12-month activity heatmap, quiz-score trends, the cards due for review today, and even the time of day you retain best.
- Current and longest streak with today’s status
- 12-month activity heatmap
- Quiz-score sparkline across your last 10 quizzes
- Reviews-due queue straight from spaced repetition
- Tag mastery + best learning hour on Pro & Premium
📤Take it anywhere
PremiumSync & Export — your notes in the tools you live in
Push any note — or a whole folder — to Anki, Obsidian, and Notion. Re-syncing updates the same record instead of spawning duplicates, so Clarion stays the single source of truth.
- Anki cards via the free AnkiConnect add-on
- Obsidian Markdown with YAML frontmatter
- Notion database entries via your integration token
- Idempotent — re-sync updates in place, never duplicates
Start building the only YouTube library that remembers for you.
Free forever. No card. No spam.