LM NoteBook PRO vs Deepen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LM NoteBook PRO
Transform any document, article, or web page into an active learning experience. Generate AI summaries, create flashcards, take quizzes with explanations, and test your knowledge through voice prompts. Build a personal knowledge hub for effective learning and faster recall.
- AI summaries
- Quizzes with explanations
- Knowledge cards & active recall
- Voice knowledge checks
- Document chat
- Diagram generation
- Tap-to-translate & text-to-speech
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Stop passively reading. Start actively learning. Still rereading the same article—or scrolling a PDF like it’s a highlight museum—and calling it “studying”? Pause. Passive reading feels productive; it usually isn’t. LM Notebook Pro turns any link or file into knowledge you can test, recall, and master—not another pile of half-read pages. Open PDFs, articles, notes, or web pages and get brief and deep AI summaries, smart knowledge cards, quizzes with explanations, and voice checks that score how well you explained an idea, not whether you skimmed it again. What you get • AI summaries — clear, structured takeaways from documents, articles, and web pages in seconds • Quizzes with explanations — verify understanding and learn from every round, not just scores • Knowledge cards & active recall — key terms and ideas in a flashcard-style flow tied to your source • Voice knowledge checks — explain a card in your own words; get accuracy feedback fast • Document chat — ask plain-language questions, clarify details, and go deeper in one thread • Diagrams — turn content into structure, flow, and visuals for faster review • Tap-to-translate & text-to-speech — read and listen with highlighting; strong for second-language study • Distraction-free reader — stay with the text instead of on-page clutter • Your knowledge hub — save important cards in a library you can reopen anytime Formats PDF, DOCX, TXT, EPUB, HTML, and web URLs. Why it’s different Don’t just stash highlights. Master the material. LM Notebook Pro is built to help you test yourself, spot gaps, reinforce memory, understand faster, and retain longer—using recall and verification, not endless rereading. Perfect for students, professionals, and lifelong learners who want to: • study articles and research • learn new topics faster • prepare for exams • review professional materials • build a personal knowledge base • reinforce what you read If your goal is effective learning and faster recall—not another afternoon lost to tabs—download LM Notebook Pro and make your next document actually stick. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Deepen
Transform passive reading into active learning by speaking your thoughts aloud. This app creates a personal knowledge map from your spoken insights, connecting ideas across all the books you read. It helps you remember what you've learned and query your own reading history.
- Log pages read and track progress
- Answer spoken questions about content
- Generate concept maps from spoken answers
- Connect ideas across multiple books
- Query your personal reading library
- Save lookup words and memorable passages
- Import Goodreads shelves
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You finish a chapter, feel like you understood it, and a month later almost nothing is left. That is the normal outcome of reading, not a personal failing. Reading is passive: the text goes in, feels clear, and leaves no trace you can retrieve. Deepen makes it active, and it takes about a minute. HOW IT WORKS 1. Log the pages you read. Your progress bar moves. 2. Deepen asks you one open question. "What was the author actually arguing there?" or "What did you disagree with?" 3. You answer out loud, in your own words, for about a minute. 4. Your answer comes back as concepts, connections, and the questions you still have. 5. Those concepts join a map of everything you have ever read. Speaking an idea back in your own words is retrieval practice, which is the best-evidenced way to turn reading into memory. Almost nobody does it, because writing notes is work. Talking for a minute is not. THE MAP IS THE POINT Every concept you articulate becomes a node. When the same idea shows up in a second book, Deepen links them without being asked. Over a few months you stop having a pile of separate books and start having one connected body of reading. Read something about legitimacy in a history book, meet it again in a book about organizations, and the map shows you the two are talking to each other. ASK YOUR OWN LIBRARY Ask a question in plain language and get an answer built only from what you have said about the books you have actually read. Not the internet. Your own words, with the notes they came from listed underneath. NOTHING IS EVER SCORED Deepen does not test you chapter by chapter. Nobody wants to be graded on their evening. The questions after each session are open and never scored, because the point is to make you think, not to make you correct. When you finish a book, it asks once more: what will you still be thinking about in a year? Your answer joins the map like any other. It is a lap of honour, not an exam. ALSO IN THE APP - Keep the words you had to look up, with the book you met them in - Keep the passages worth remembering, and share one as a sticker - Scan a barcode to add a book, or import your Goodreads shelves - A home screen widget showing the book you are on WORKS WITH PAPER Deepen never asks what you are reading on. Paper, library copy, hardback, secondhand, an ebook, a PDF. You talk, so it does not matter. Nothing to sync, no highlights to export, no cable. BUILT TO BE PRIVATE Your notes and your map live on your iPhone. The map is computed on the device, so it works with no signal at all. There is no account and no sign-up. FOR PEOPLE WHO READ ON PURPOSE Deepen is for nonfiction readers who want the reading to stick: students, researchers, people working through a field, anyone who has ever finished a good book and been unable to say what it argued. DEEPEN PRO Deepen is free to try. Pro unlocks unlimited recaps, the map across every book, and Ask. - Monthly: $5.99 - Annual: $49.99 with a 7-day free trial Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple Account settings. Privacy Policy: https://chamallox.github.io/deepen-legal/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support : https://chamallox.github.io/deepen-legal/support/
Screenshots
Verdict
The clearest difference is rating: Deepen at 5.0 against LM NoteBook PRO's 3.1. Deepen also leads on update cadence (every 5 days vs every 5 weeks). LM NoteBook PRO's advantage is ratings volume (15 vs 1). On price, review sentiment, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. LM NoteBook PRO sells 5 in-app purchases, starting at $0.99 per 7 days and Deepen sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Deepen holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: LM NoteBook PRO has 15 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
LM NoteBook PRO ships an update every 5 weeks, Deepen every 5 days. The most recent releases landed on October 25, 2026 and October 23, 2026 respectively.
| Parameter | LM NoteBook PRO | Deepen |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (15 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 15 — better | 1 |
| Update frequency | Every 5 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 123 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | ENGLISH IN GAMES | Francois Sempe |
Customer experience
LM NoteBook PRO
Deepen
In-app purchases
LM NoteBook PRO
- Summify: AI Summarizer Weekly$0.997 Days
- Summify: AI Summarizer Monthly$2.991 Month
- Monthly Limitless Bundle$7.991 Month
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- Summify: AI Summarizer Annual$19.991 Year
- Annual Limitless Bundle$49.991 Year
Deepen
- Pro Weekly$6.997 Days
- Pro Annual7 Days trial$49.991 Year
- Pro Annual7 Days trial$79.991 Year









