Turn your notes into mastery.

Add your material once, then generate a full study set in one action. ZeniStudy builds the guide, flashcards, and quiz from the same extracted passages, so all three stay aligned instead of drifting apart, which matters most when you're reviewing under time pressure. A full set costs 50 credits, and every new account starts with 150 free.

Yes. Every new, verified account gets a one-time 150 free credits, exactly enough for three complete study sets from your own material. It's not a countdown-timer demo. It's real product usage, so you can judge ZeniStudy before paying.

Pasted text, plain text files, PDFs, OCR-readable photos or screenshots, scanned pages, and YouTube links with usable captions. Uploads support up to 20 MB per file, 10 files at once, 50 MB combined, and 60,000 extracted characters per source, enough for a normal chapter or lecture transcript.

Yes. ZeniStudy uses OCR to pull readable text from photos, screenshots, scanned pages, and image-based PDFs, then builds your guide, flashcards, and quiz from that text. Clean, well-lit images work best; handwriting can work if it's legible, but OCR quality still depends on clarity, contrast, and blur.

ZeniStudy uses the video's captions or transcript as source text. It doesn't watch the video or interpret visuals. Great for recorded lectures and review sessions with a real transcript; without usable captions, there's less material to work with.

A generated guide includes a title, subject, topics, a summary, and sections with explanations, key concepts, definitions, worked examples, and exam tips, plus a standout "Things You'll Probably Forget" section for easy-to-miss details and commonly confused ideas. Every citation is checked against your own material on the backend, so the AI can't cite a passage that isn't really there.

Each card (generated from the same source as your guide and quiz) has a front, back, topic, difficulty rating, and a citation back to its source passage. Flip, move with the keyboard, and shuffle for free (shuffle is just a local reorder). A brand-new deck is a fresh AI generation and costs credits; decks save to your Library automatically.

ZeniStudy mixes multiple-choice, short-answer, and open-ended questions (up to 50, at the difficulty you choose), each with an optional hint that nudges without giving the answer away. After grading, start a follow-up quiz: easier, same, harder, mixed, or focused on your weak topics.

Yes. Scores are calculated on the server from a sealed record of your actual answers. The browser is never trusted with them, and correct answers are never sent to it either. Multiple-choice and short-answer grading is instant and free; open-ended answers are graded against a rubric for a small extra cost.

After a quiz, ZeniStudy splits your performance by topic: score above the strength threshold and it's a strength, below and it's a growth area. The calculation runs on your own graded answers, plain math with nothing for an AI to guess at, hallucinate, or flatter.

A study guide is 40 credits, a flashcard deck 5, and a quiz 5. A full study set runs 50 credits total.

Monthly plans: Basic $5 for 1,000 credits, Student $10 for 3,000, Power $25 for 10,000 (annual billing drops those to about $4, $8, and $20/mo). Prefer no subscription? Top up instead: $3 for 100 credits, $5 for 200, $10 for 500, or $50 for 30,000, the strongest per-credit deal.

Subscription credits refresh each billing cycle and don't roll over. Annual plans still deliver your monthly amount each month, not one lump sum. One-time top-ups and your free starting credits aren't tied to a cycle; they're simply spent as you use the product.

Yes, any time. Payments run through Airwallex, and credits are added only after a payment actually completes and is verified, not just because you land on a success screen.

Up to 10 study guides, 10 flashcard decks, and 10 quizzes at once, free, with each limit counted independently. Delete older items to make room, or permanently raise every limit by 10 with a one-time $3 purchase.

Yes. Everything you upload, and everything generated from it (guides, decks, quiz results, Library items), stays scoped to your own account only. No other student can browse or access it, and there's no fabricated dashboard data: real balances, real activity, nothing invented.

ZeniStudy builds the guide, deck, and quiz from one consistent source, instead of separate tools that can drift apart. It's also honest about limits: citations are verified, grading happens server-side, the learning path comes from real answers, and the AI says when it can't see something rather than guessing.

Generation (guides, flashcards, quizzes, and rubric grading) runs on DeepSeek, with one exception: the strengths-and-growth-areas breakdown after a quiz. That part skips the AI entirely and runs as a simple rule-based calculation on your own graded answers.