YouTube · PDF · TXT
Turn YouTube transcripts, texts and PDFs into structured explanations. Explore the arguments and find the ideas again in your library.
100 gift credits · No card · No time limit
For YouTube sources, Sapyora generates the material from the available transcript — it does not analyze images, video frames, or the audio track.
ExamplePhysionic
Acute cortisol activation is normally adaptive.
Read this exampleExample
This is a real result. Explore the source's explanation and its critical counterpart at your own pace. Read the full example without an account.
Physiology · Endocrinology
Original source ↗Materials are AI-generated and can contain errors. That's why every article carries a visible marker and a link to the original source — verifying important information stays with you.
Features
The complete article, clarified with definitions, mechanisms, examples, key ideas and pitfalls.
The strongest case for the opposing view, with evidence, limits and conditions — not a verdict that the source is wrong.
Switch between the source and critical reading, choose the right form and search everything you save. Keep it private or publish it to the shared library.
Key terms are highlighted with hover tooltips, so you never lose the thread on jargon.
Instantly search everything you save — readings, principles, theses, mechanisms, models, practices and abstractions from your materials.
Read the material and its critical reading in your language, regardless of the source language.
Members can make their own processed materials public, so everyone with an account can find them — a growing common library, in your language.
If material generated from a YouTube source transcript already exists in your language, it is added instantly with no credits used.
Send any material, with all its reading forms and perspectives, through one private link — even to people without an account.
Add a whole playlist or a multi-hour source — Sapyora works with each item's available transcript and handles the length.
Got a playlist or many transcripts to analyze? Turbo starts several materials at once instead of one at a time. It does not speed up an individual material and is optional.
Not just video: paste text or attach .txt/.pdf files — even several at once — and each becomes clear, structured material that is also examined critically.
Ask your library: 1 credit per completed answer.
A law or causal regularity of reality — an “if X, then Y” relationship that stays true whether anyone is thinking about it or not. Principles explain WHY things happen.
Example: “Compound interest”: any constant percentage growth, reinvested, produces exponential effects — with money, skills, or an audience.
A thinking tool you deliberately pick up to judge a situation: a lens, a heuristic, a frame. Mental models don't describe the world but the way you look at it — they answer HOW to think about a problem.
Example: “Inversion”: instead of asking “how do I succeed?”, ask “what would guarantee my failure?” — then eliminate exactly those behaviors.
A compressed concept: a short term that packs a complex idea into a memorable form. Once learned, an abstraction becomes a vocabulary piece you think and communicate faster with.
Example: “Opportunity cost”: the value of the best alternative you give up when you choose something — an entire economic argument in two words.
Separates important propositions from central theses supported by argument, preserving the explanation and sources behind each nuance.
Example: “Insufficient sleep reduces attention the next day” — a clear proposition that evidence can support or challenge.
Shows the causal chain or process through which an effect occurs — not merely that two things appear together.
Example: “The feedback loop”: an action produces a result, the result provides information, and that information adjusts the next repetition of the same action.
Turns applicable ideas into repeatable actions, flexible procedures, or explicit steps you can reuse.
Example: “Weekly review”: once a week, gather your commitments, choose priorities, and define the next steps.
How it works
Not just video: paste text or attach .txt/.pdf files — even several at once — and each becomes clear, structured material that is also examined critically.
What the source argues, reconstructed faithfully and clearly without weakening its case.
Switch between the source and critical reading, choose the right form and search everything you save. Keep it private or publish it to the shared library.
Pricing
100 gift credits · No card · No time limit
€0no card, no time limit
Receive 100 gift credits, without a card. Check the estimate before each processing; some materials may exceed your available credits.
The gift never expires. Membership can wait until your library convinces you.
€12per year
1,200 processing credits with every annual payment. Join when creating your account and you also get the free account’s 100 gift credits: 1,300 credits to start. The gift is granted once.
Run out of credits? Top up from €5, with bonuses on larger packs. Credits stay metered and fair.
Credits do not depend only on video length. The text and analysis needed also matter. You see an estimate before starting; the final cost can be lower or higher depending on actual processing. Unused reserved credits are returned. Audio and questions use credits separately. The 100 gift credits do not guarantee processing of every material.
| No account | Free account | Member — €12/yr | |
|---|---|---|---|
| Read the public examples, complete, in 15 languages | Included | Included | Included |
| Open and read materials received via a link | Included | Included | Included |
| Analyze YouTube transcripts, playlists, and written materials | Not included | 🎁 100 gift credits | 1,300 cr first year · 1,200 on renewal |
| Permanent personal library: re-reading, search, PDF export | Not included | Included | Included |
| Your consolidated knowledge base is built from your own materials | Not included | Included | Included |
| Ask your library and receive answers with citations | Not included | Included | Included |
| Favourites, learning state and private notes | Not included | Included | Included |
| Received links stay in “Received” without automatically changing your knowledge base | Not included | Included | Included |
| Email reminders from your library (optional) | Not included | Included | Included |
| The shared member library — browse and publish | Not included | Not included | Included |
| Materials already processed by others — instant, 0 credits | Not included | Not included | Included |
| Credit top-ups whenever you need more | Not included | Not included | Included |
Ask your library: 1 credit per completed answer.
FAQ
Long, idea-dense content: YouTube lectures, podcasts, talks and interviews, but also whole books, long articles, essays, magazines and PDFs. You can combine files up to roughly 2,000 text pages in one run.
A faithful Source reading and a critical Counterpoint, each available as a summary, full article and key ideas. Sapyora also extracts and consolidates six cognitive types: principles, mental models, abstractions, claims, mechanisms and actions.
It is the strongest well-supported case for the opposing perspective, built for comparison rather than as a verdict that the source is wrong. It surfaces objections, limits and conditions that make the original idea more precise.
Credits do not depend only on video length. The text and analysis needed also matter. You see an estimate before starting; the final cost can be lower or higher depending on actual processing. Unused reserved credits are returned. Audio and questions use credits separately. The 100 gift credits do not guarantee processing of every material.
Yes, by default. You decide whether to keep a material private, share it through a private link or publish it in the member library. You can withdraw access or unpublish it later.
Receive 100 gift credits, without a card. Check the estimate before each processing; some materials may exceed your available credits.
Yes. Ask your library synthesises an answer from your processed materials and consolidated knowledge, and shows the exact sources used. If the library lacks enough evidence, it says so instead of filling the gap. Each completed answer costs 1 credit, refunded automatically if a technical error occurs.
Similar principles, models, abstractions, claims, mechanisms and actions are consolidated under one identity. Each source adds an explanation, nuance or counterpoint, so you keep the differences without multiplying the same idea.
Members can publish their materials and browse what others have published. If material from the same YouTube source transcript already exists in your language, it is added instantly at no credit cost. Curated examples remain open to everyone.
Without an account you can read it in full in the Example Library, but you do not get a personal library. With an account, the link is kept in “Received”, but its knowledge does not enter your knowledge base automatically. For a public YouTube source, members can generate material from the available transcript or receive their own copy instantly if it already exists. Text, PDFs, and paid or restricted YouTube sources can be read through a private link but cannot be reused automatically in the recipient’s knowledge base.
Your account details stay private and are never sent to the AI. Transcripts and submitted texts are processed through paid business APIs that do not use them to train models. You can export or delete your account from settings.
Processing starts from the full transcript or text. AI highlighting distinguishes additions from the source, citations link answers back to evidence, and you can return to the original or edit your material if an interpretation needs correction.
Fifteen: English, Romanian, French, German, Spanish, Italian, Portuguese, Dutch, Polish, Turkish, Hungarian, Swedish, Norwegian, Danish and Finnish. The source can be in a different language from the one you choose for reading.
Sapyora is built and maintained by one person together with AI agents — without investors, offices, a sales department or an advertising business. The €12 returns to you in full as processing credits, so the membership supports an independent learning tool while you pay for the machine's real, metered work.
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Knowledge you keep.
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