The AI study companion app for real course loads. Convert PDF to audio and listen anywhere, get chapter-by-chapter study guides that keep every detail, quizzes built from real misconceptions, and answers cited from your own book.
Upload, approve the exact cost, and study - you always see the price before anything is charged
Upload your course material
Add a document or image and Study Companion will detect its chapters.
Detected chapters
Skip chapters you don't need - front matter and indexes are excluded free.
Review each chapter with a focused 5-10 minute recap or a two-host discussion.
Listen to the complete lesson while following the study guide section by section.
Generate audio inside your chapter workspace, preview the available voices, and download each finished lesson.
Multimedia-learning research suggests that well-designed combinations of words, visuals, and narration can support understanding. The benefit depends on the material, design, and learner; audio is not a guaranteed outcome boost.
Mayer's multimedia-learning framework examines when words and relevant visuals help learners build a coherent mental model—and when extra media becomes distracting.
Source: Mayer, Multimedia LearningControlled multimedia experiments show that narration and visuals interact with on-screen text; redundant presentation can help or hinder depending on the design.
Source: Moreno & Mayer (2002)A meta-analysis of the modality effect found that narration can help in some multimedia conditions, while the size and reliability of the effect depend on how the lesson is designed.
Source: Ginns (2005)Five tools in one AI learning companion: convert PDF to audio, build a complete study guide, quiz yourself, map every concept, and chat with your book. This is exactly what each one looks like.
PDF to Audio Converter
More than a PDF to voice converter: Study Companion writes a proper lesson from each chapter first, then narrates it. Follow along in the study guide while the player runs, or queue up chapters for the commute.
AI Study Guide Maker
Summaries condense away exactly what shows up on exams. The AI study guide maker teaches every selected page - definitions, formulas, diagram explanations - as navigable sections you can read, print, or export.
Misconception Quizzes
Every wrong option is a real misconception, not filler. Miss a question and the quiz links you straight back to the section that explains it - then lets you retake for free.
Interactive Knowledge Map
The knowledge map lays out every concept and how it relates to the others - prerequisites, contrasts, causes, examples - across all chapters. Click any node to jump to the section that teaches it.
Ask Your Book
Ask in plain language and get answers drawn only from your document, never the open internet. Every claim carries a citation chip that jumps to the exact chapter and section, so you can verify it in one tap.
Export a styled study-guide PDF or Word document for any material - print it, mark it up, and keep it long after the exam.
Use the study companion app on the web or install it on Android from Google Play - the same library, credits, and audio lessons everywhere.
No subscription, nothing to cancel. 1 credit = 1 page, you approve the exact cost before processing, and unused credits keep forever.
Fair question. For a quick answer, a chatbot is great. For turning a whole book into something you can actually study from, it's the wrong tool.
ChatGPT, Gemini, Claude
Coverage
File caps and message limits. Long documents get cut off - pages are skipped silently and you never know which.
What you keep
A chat transcript you’ll be scrolling to find again next week.
Effort
Prompt skill, manual chunking, pasting, and stitching the answers back together yourself.
Trust
Answers drawn from the open internet - hard to tell what actually came from your book.
Price
A subscription that runs ~$20 every month, whether you study that month or not.
Built for whole books, not quick chats
Coverage
Every selected page processed chapter by chapter, with per-chapter retries. Nothing skipped.
What you keep
A printable study-guide PDF, Word export, and downloadable per-chapter MP3s - yours forever.
Effort
The same tested masterclass structure for every chapter of every document, automatically.
Trust
Ask Your Book answers cite the exact chapter, section, and pages of your material.
Price
One-time credit packs that never expire. No subscription, nothing to cancel.
Got a 5-page handout? A chatbot is fine. Study Companion exists for the 300-page reviewer.
Discover expert advice, study techniques, and educational insights to enhance your learning journey
Transform your PDFs into audio with our comprehensive guide. Learn how to convert PDF to MP3, document to audio, and enhance your study experience with text-to-speech technology.
What chat AI does brilliantly, where it breaks down on whole books, and what each option actually costs a student.
Read More →1 credit = 1 page
you approve the exact cost first
Packs from $5.99 / ₱349
one-time payments, no subscription
Credits never expire
nothing to cancel, ever
Cheaper than a month of ChatGPT Plus
a Semester Pack covers a full course load
20 free credits
every new account starts studying free
1 credit = 1 page processed. Buy a pack when you need it - credits never expire and there is nothing to cancel.
A Semester Pack costs less than a single month of a typical AI subscription (~$20/month) - and it covers a whole course load without expiring.
Start with 20 free credits when you create an account.
Lecture notes & handouts
A full course load
Heavy reviewers
Whole books, board exams
One-time payments - no recurring charges, no monthly limits, nothing to cancel.
Upload your material, see the exact cost, and study from a complete masterclass - starting with 20 free credits.
Start with 20 free credits