For readers who think with a pen

Read slowly.
Think with a pen.

Luxmente is a calm PDF and EPUB reader you can write in. Read a book as it was meant to be set, underline with your S Pen, write in the margins and keep what matters. It all stays on your device.

Free, no accountTry it in your browser Google PlayComing soon

Free for 3 of your own documents, every feature included. Then $14.99, once. No subscription.

  • EPUB
  • PDF
  • MOBI
  • AZW3
  • FB2
  • CBZ

Real thinking in the age of AI

A machine can summarize a book. Only you can argue with it.

Luxmente is not another AI notes app. It is a quiet place to read, write by hand and remember. When you want a second opinion, send a passage to your own AI app with one tap. It never writes in your margins unless you ask.

EPUB, read properly

An EPUB should read like a book.

Many note apps only open PDFs, or show an EPUB as one long web page. Luxmente sets it like a printed book: real pages, measured lines, drop caps and hyphenation. Then it lets you write on it.

  • Ink that follows the wordsUnderline or circle a line with your pen. Make the type bigger and your marks move with the text.
  • Your type, your pageFive reading typefaces, size, spacing, margins and page colors from warm paper to deep lapis.
  • Pages that turnA paper page turn, a slide or an instant flip. Two pages side by side, or one continuous scroll.
  • Footnotes in placeA footnote opens as a card beside the line. Images, tables and math stay intact.
  • Listen when your eyes are tiredRead aloud sentence by sentence, in the background, and pick up where you stopped.
  • Kindle and FB2 files tooDRM-free MOBI, AZW3 and FB2 books become EPUBs when you add them.
III. Coming back

The first time through a book, you read for the story. The second time, you read for yourself: the line you skipped turns out to be the one that mattered, and the margin fills with questions you could not have asked before.

A good reader keeps both readings on the same page. The ink from the first visit is still there when you return, older and a little wiser than the page around it.

So the book becomes a conversation that lasts for years, held in your own hand, on paper that never yellows.

Try it: change the page or the size. The pen marks stay on their words.

What it does

Three things, done with care.

Write as on paper

A pressure-sensitive pen that feels like ink, in your books, PDFs and notebooks.

  • Hold the S Pen button to erase
  • Rest your palm on the screen
  • Highlighter that settles on the line
  • Scribble over ink to erase it

Study in your PDFs

A desk for textbooks, papers and lecture slides, with room to work beside the page.

  • Document and notebook side by side
  • Scanned pages become searchable text
  • Add, reorder and rotate pages
  • Export a PDF with your notes in it

Remember what you read

Every underline lands in the book's notebook. The passages that matter become cards.

  • Cards come back right before you forget
  • Cover a diagram, test yourself
  • LaTeX formulas as real math
  • Export to Anki, Markdown, Obsidian

Made for the late hours

The house is asleep. The page is not glaring at you.

23:40

You have one more chapter before the exam, or before the end of the novel. The room is dark and the screen should not be a lamp in your face.

Luxmente turns the page deep lapis blue and the letters warm ivory. The light stays low and warm. And when your PDF has a photo, a slide or a microscope image, it keeps its true colors instead of turning into a negative.

  • Lapis night page. Deep blue paper, warm text, very little glare.
  • Brightness and warmth. Under the page, for PDFs too.
  • True-color figures. Dark PDFs do not invert your photos.
  • OLED black. For AMOLED screens like the Galaxy Tab S8+.

Where it runs

Made for the pen. Ready for every screen.

Samsung Galaxy Tab and S Pen came first. The same app adapts to phones, foldables, dual screens, iPad, iPhone and computers, and works offline once it is open.

Android tablets

Galaxy Tab S series and other pen tablets

The home ground. Hold the S Pen button to erase, rest your palm on the glass, write with real pressure. Wacom and USI pens work too. Landscape gives you two pages side by side.

Google Play · soonBrowser · now

Android phones

Galaxy S, Pixel and others

A layout of its own: one column, a bottom drawer and the tools within reach of your thumb.

Google Play · soonBrowser · now

Foldables

Galaxy Z Fold, Pixel Fold

Open it like a book. Two pages meet at the hinge, or the document sits on one half and your notebook on the other.

Google Play · soonBrowser · now

Flip phones

Galaxy Z Flip and other flips

Half folded on the table, the text stays on the top half and the controls move to the bottom. Narrow cover screens get a compact layout.

Google Play · soonBrowser · now

Dual screens

Microsoft Surface Duo

Spans both screens: the book on one, your notes on the other, and nothing lost in the hinge.

Browser · now

iPad

iPad with Apple Pencil

Runs in Safari today. Add it to your Home Screen and it opens like an app. The App Store version comes next.

Safari · nowApp Store · next

iPhone

Recent iPhones in Safari

Read on the go and review your cards in a spare minute. Add it to your Home Screen for a full-screen app.

Safari · now

Computers

Windows, Mac, Linux, Chromebook

Chrome, Edge, Safari or Firefox. The mouse wheel scrolls, Ctrl and the wheel zoom, and keyboard shortcuts cover the rest. Install it from Chrome or Edge.

Browser · now

Pens: Samsung S Pen, Apple Pencil, Wacom and USI pens.Without a pen: your finger, a mouse or a keyboard.

Who it is for

For people who read with a pen in hand.

EngineeringWork the derivation in the margin of the textbook.
MedicineCover an anatomy plate, test yourself, keep histology in color at night.
MathematicsFormulas render as real math, proofs live next to the page.
LiteratureUnderline, argue, and find every note again in the book's notebook.
LawMark up the case file, find every scanned page by its words.
Night readersA novel in EPUB on a page that stays dark and warm until the last line.

Yours, and only yours

Your books never leave your device.

No account to make, no server of ours, no analytics. Your reading life is not our data.

  • No accountOpen the app and read. No sign-in, no email.
  • On your deviceBooks, handwriting, notes and cards are stored where you read them.
  • No ads, no analyticsNothing watches how you read.
  • Works offlineOn a plane, in a library basement, anywhere.
  • One-file backupEverything in a single file, with optional password encryption. Keep it wherever you like.

Price

Try it. Then own it.

$14.99
One time
  • Free for 3 of your own documents, with every feature
  • One purchase removes the limit for good
  • No subscription, no yearly fee, updates included
  • When you reach the limit, your books and notes stay open
Free, no accountTry it in your browser Google PlayComing soon

Bought through Google Play. Local prices vary by country. The browser version is free for 3 documents and has no purchase.

Questions

Is it good for plain reading, without a pen?

Yes. The reading room is made for long sessions with a finger, a mouse or a keyboard: an EPUB is set as real pages, with your choice of typeface, size and page color, a time-left estimate for the chapter and reading stats. The pen is there when you want it.

Which files can I open?

EPUB and PDF, plus DRM-free Kindle books (MOBI, AZW3), FB2 and CBZ comics, and your own handwritten notebooks. You can also scan paper pages with the camera into a PDF.

Which devices does it run on?

Android tablets with an active pen, Samsung Galaxy Tab and S Pen first. It also runs on Android phones, foldables like the Galaxy Z Fold and Z Flip, the Surface Duo, and in Safari on iPad and iPhone. On a computer, open it in Chrome, Edge, Safari or Firefox. The iPad app for the App Store comes next.

Does it sync between devices?

Yes, on Android, through your own Google Drive. Turn it on in Settings > Files and backup: your notes, cards and documents sync through a hidden folder in your Drive. There is no account with us and no server of ours in between. A daily Drive backup runs alongside as a separate safety net, and on desktop Chrome backups go to a folder you choose.

What does "3 documents" mean?

Three PDFs, EPUBs or comics you add yourself. Sample books, notebooks and planners don't count. Deleting a document doesn't give the slot back. When you add a fourth, the purchase screen appears; nothing you already have is locked.

Does it use AI?

Only when you ask. Select a passage and send it to the ChatGPT, Gemini or Claude app you already use. Translation can run fully on the device with downloadable language packs. Luxmente never writes in your margins on its own.

Which languages?

The app is in English and Turkish and follows your device language. Your books can be in any language.

Tonight, maybe

Open a book. Pick up the pen.

Free, no accountTry it in your browser

Three documents free, every feature included. No sign-up.