Lux·mente

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. Underline, write in the margins with your S Pen, and keep what matters: it all stays on your tablet.

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.

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.

What it does

Three things, done with care.

Write as on paper

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

Read like a book

EPUB, PDF and comics, set with the care of a printed page.

  • Page turns that follow your finger
  • Two pages side by side in landscape
  • Drop caps, hyphenation, footnote cards
  • Read aloud when your eyes are tired

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+.

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.
Art and designSketch over a PDF, keep images in their real colors.
Night readersA page that stays dark and warm until the last line.

Made first for Samsung Galaxy Tab and S Pen. Works with other active pens and on Android phones. iPad and Apple Pencil come next.

Yours, and only yours

Your books never leave your tablet.

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 on the tablet.
  • 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

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.

Which devices does it run on?

Android tablets with an active pen, Samsung Galaxy Tab and S Pen first. It also works on Android phones. The iPad version with Apple Pencil support comes next.

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 files can I open?

PDF, EPUB and CBZ comics, plus your own handwritten notebooks. You can also scan paper pages with the camera into a PDF.

Which languages?

The app is in English and Turkish and follows your device language.