Every day planned to your exam.
Built from your lectures.
Upload your lectures, name the exam date, and Bo plans every day until then.AI study tools for your own lectures. Upload them and tell Bo when the exam is. You get a plan for every day until then, weakest topics first, and each session builds its own flashcards, quiz, practice exam or study guide in one click.
130,000+ students · since 2024
Nobody rereads every slide. Bo does.
Slides, documents, lecture videos, even scans and photos. Upload all of it. Bo reads every page, breaks your course into the topics and concepts you have to learn, and answers with the page it came from.
What's the difference between mitosis and meiosis?
Mitosis makes two identical cells. Meiosis makes four, each with half the chromosomes.
From upload to answer in four steps.
Upload your course
Lectures, a chapter, a photo of the whiteboard. It all goes in.
Bo reads every page
It learns your material and how the ideas connect.
Bo connects your course
It links topics and concepts across every lecture and chapter you add.
Ask it anything
Get a cited answer in seconds, or make a study set with New material.
biochem-lecture-4.pdf
24 pages
Lecture 2 · Krebs cycle ↔ Chapter 4 · enzymes
You asked
Explain the Krebs cycle.
The second stage of cellular respiration, where acetyl-CoA is oxidized to release energy.Lecture 4, p. 12
Stop studying what you already know.
Bo maps every concept in your course, then runs a short placement check so it knows where you stand. From there, every quiz, flashcard deck and daily review targets your gaps, and you watch your readiness climb. Bo keeps track across the weeks, so what you got wrong recently comes back first.
Cell Biology
Every concept mapped, checked and tracked
Photosynthesis
Q3 · Which pigment absorbs the most red light?
Ask Bo for 20 hard flashcards, press Create, and watch card 7 of 20 appear, live. The deck opens when it is done.
Why not ChatGPT or NotebookLM?
They answer the question you ask, then forget you. Bo knows which concepts you have not learned yet and keeps working on them with you until you are ready.
Every labeled diagram, masked for recall.
Bo finds the diagrams in your own lectures and covers every label, then exports to Anki's native Image Occlusion. No drawing boxes by hand.
Students don't just use it. They tell their friends.
“Just got an account today because I was falling behind in my intermediate accounting class. Already love whats going on here, this is exactly the type of software I have been internally begging for.”
“Thank you sm for this amazing website, really let go of my tension for my upcoming tests and exams”
“Thats such a great idea, great to see a company that puts thought and care into a product.”
“Sorry for wasting your time. I am 80yrs of age and helping my granddaughter who has ADHD!”
“Just got an account today because I was falling behind in my intermediate accounting class. Already love whats going on here, this is exactly the type of software I have been internally begging for.”
“Thank you sm for this amazing website, really let go of my tension for my upcoming tests and exams”
“Thats such a great idea, great to see a company that puts thought and care into a product.”
“Sorry for wasting your time. I am 80yrs of age and helping my granddaughter who has ADHD!”
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Start free. Pay when you need more.
Free needs no card and has no time limit, with about 4 materials a week. Pro and Ultra give you more materials, more courses and larger uploads. Every plan has a weekly cap, so there are no surprise bills.
A study set is one flashcard deck, quiz, exam, study guide or mind map.
Free
About 4 study sets a week
$0.00
Free forever
ProMost popular
About 35 study sets a week
…
per month
Ultra
About 105 study sets a week
…
per month
The StudyPDF app is here.
Flashcards, exams and Bo in your pocket, built from your own lectures.
Free to download. iPhone, iPad and Android.
Scan to install
Point your phone camera at the code.
Questions, answered.
No. Bo only pulls from the lectures and notes you upload. Every answer includes a citation to the page it used, so you can open the source and verify in one tap. If your material does not cover the question, Bo tells you instead of inventing an answer.
PDFs, slide decks, scanned notes, photos of a whiteboard, YouTube lectures, and web pages. Upload a single chapter or your whole course. Bo reads scans and handwriting with vision, and video citations jump to the exact second in the player.
Yes. Press New material, pick Practice exam or Study guide, choose your sources and options, and create it. It is made from your uploads, with citations. Or tell Bo, for example 'a 20-question exam on chapter 3,' and Bo opens the form already filled in. You can open and edit the result.
Yes. The StudyPDF apps for iPhone, iPad and Android are live, and it runs in your browser too. It is the same account everywhere, so your courses stay in sync. Open Bo between classes to ask about the lecture you just left, or review flashcards on the way to the library.
For many students, yes. Free needs no card and has no time limit. You can upload your course, ask Bo, and make about 4 materials a week across 2 courses. Upgrade to Pro or Ultra when you need more materials a week, more courses, or larger uploads.
Yes. Bo tracks what you have practiced, what you got right, and what is slipping. It can nudge you to refresh weak spots and picks up where you left off next week or next semester, as long as the course is in your account.
More about StudyPDF
AI study tools that actually know your course
Cites every answer
Each citation points to a page of a document, a second of a video or the source page of a website, and one click opens it beside the chat. Photos are cited by their name, so there are no invented page numbers.
Makes whatever you study
The New material form makes flashcards, quizzes, practice exams, study guides, cheat sheets, summaries and mind maps for one lecture, one topic or your weak concepts. Open the study guide maker or any other kind and set difficulty, item count, question types and language before you press Create.
Grounded, never generic
Diagrams, charts and tables are cropped out of your slides and stored on their own, so they can come back inside flashcards, quiz questions and chat answers. A verification pass then checks every citation against your original material.
Remembers your whole course
Your course is split into topics and concepts, and every card you rate or question you answer updates the score of the concept it tests, with older results counting less over time. Quiz results list your answers per concept, weakest first.
Start studying.
Upload your course and ask Bo anything. Free to start, no card required.