Which one fits you
- You mostly read articles and books and like to highlight: Readwise Reader. It also pulls YouTube transcripts so you can highlight them. No free plan.
- You want a summary of each thing you save, read inside one app: Recall. It has native mobile apps and extensions for every major browser.
- You are researching one topic from a set of documents and videos: NotebookLM. Free, scoped to one notebook at a time.
- You learn mostly from YouTube and podcasts and use more than one AI assistant: BrainTube. It keeps the transcript of each video and episode, links what you save in a knowledge graph, and lets Claude, ChatGPT, Cursor and other MCP clients search the library and save into it.
- You prefer writing your own notes: Obsidian, with a capture app beside it for media.
How to do it, step by step
- Decide what you need to remember. Titles you finished belong in a tracker. Ideas, quotes and explanations need the full text saved: a transcript for video and audio, the article or PDF itself for reading.
- Save the source, not just the link. Use a capture app that stores the transcript or text when you save. A playlist or bookmark only keeps the title.
- Let saving happen where you already are. Use the browser extension or share sheet of your capture app, or connect YouTube so playlists and Liked videos come in on their own.
- Search by meaning later. Ask the question you have ("what did that interview say about pricing?") instead of trying to recall the title.
- Review what matters. Schedule reviews of the few things you want to keep in your head, for example with spaced repetition.
What BrainTube does here, and what it doesn't
BrainTube saves YouTube videos, podcasts and audio, web articles, PDFs, EPUB ebooks, Notion pages, screenshots and social posts, and transcribes and indexes each one. Connect your YouTube account and your playlists and Liked videos keep syncing. Search is hybrid (meaning plus keywords), and in BrainTube’s own chat a video citation shows the timestamp of the moment it came from. Reviews run on FSRS spaced repetition.
It only knows what you save. It can’t read your YouTube watch history or Watch Later list, and it runs as a web app, a Chrome extension, and iPhone and Android apps. If you need to find a video you watched but never saved, see how to search everything you’ve watched on YouTube.
More comparisons: tools to build a personal knowledge base for AI, best knowledge apps in 2026 and Recall alternatives.