An ebook reader built for serious readers.
Import your EPUBs and read them with autopace, bionic text, custom fonts, and a reading environment you control.
She sat by the window, watching the rain trace slow paths down the glass.
The café was quiet now. Only the low hum of conversation remained.
She turned the page and kept reading.
She sat by the window, watching the rain trace slow paths down the glass.
The café was quiet now. Only the low hum of conversation remained.
She turned the page and kept reading.
Your ebook reader isn't helping you read.
Sound familiar?
You never finish the books you buy
You open a book with enthusiasm, make it through a few chapters, then quietly abandon it. The reading never sticks.
“I read that page twice and still don't know what it said.”
Your mind wanders mid-chapter
You reach the bottom of a page and realise your eyes moved but your brain didn't. You go back and re-read. Again.
That's it. Nothing else.
Generic readers offer almost nothing
Font size and dark mode. That's the extent of most EPUB readers. No focus tools, no guidance — just text on a screen.
Your reading is scattered across apps
EPUBs in one app, PDFs in another, articles in your browser, Kindle books locked in Amazon's walled garden. Nothing connects.
The TBR pile
The to-be-read pile keeps growing
You buy books with good intentions. They sit unread, a quiet reminder of everything you meant to get through but didn't.
One reader for every format
ePubs, articles, PDFs, DOCX, or pasted text. Read everything in one place, one experience.
Import ePubs
Books, textbooks, long-form
Paste any URL
Articles, blogs, newsletters
Upload PDFs
Papers, reports, slides
Upload DOCX
Essays, notes, documents
Copy & paste
Grab text from anywhere
Reading tools built into the reader.
Not bolted on. Not an afterthought.
Every feature is designed to help you read better.
Autopace
Text flows at your chosen speed. Your eyes follow the guide — hands-free reading for long sessions.
Bionic reading guides the eye through text.
Bionic reading
Highlights word beginnings so your brain recognizes words faster with less effort.
One line at a time
keeps your focus
sharp and clear.
Line tracking
Focus on one line at a time to prevent skipping and losing your place in dense passages.
Large walls of text are hard to track and easy to lose focus on. When you face a dense block of information, your brain naturally feels overwhelmed before you even begin reading.
Breaking content into bite-sized chunks improves comprehension significantly. By focusing on one piece at a time, you reduce cognitive load and absorb information more effectively.
Your brain processes information faster when it's not overwhelmed. This method keeps your momentum going, preventing the urge to skim or skip important details.
Paragraph focus
Breaks long chapters into manageable pieces so you never feel overwhelmed by the page.
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Custom fonts
Choose from 7 fonts including Lexend, Atkinson Hyperlegible, OpenDyslexic, and Georgia.
Relax your eyes
Reading themes
Dark mode, sepia, cream, mint, and more. Find the theme that's easiest on your eyes.
Every feature is grounded in research
Peer-reviewed studies from Adobe Research, Brown University, Google, and more.
ACM CHI — Adobe Research & Brown University
2023
“Reading speed, comprehension, and preference all improved with digital reading rulers”
Readers with dyslexia saw the largest gains. Rulers reduced eye strain and fatigue.
Learning and Instruction
2024
“Guided reading fully closed the comprehension gap between ADHD and non-ADHD readers”
Stage-by-stage reading guidance eliminated performance differences entirely.
Journal of the International Neuropsychological Society
2025
“Guided word presentation boosted ADHD reading comprehension by removing eye-movement interference”
Eye movements themselves impair reading in ADHD — sequential presentation eliminates that barrier.
Learning and Individual Differences
2023
“Attention — not vocabulary, not memory — is the #1 predictor of reading comprehension in ADHD”
Tools that guide and sustain focus directly address the single biggest barrier.
RSVP Research — Meta-analysis
2023
“0% comprehension loss at up to 350 WPM with paced reading”
No significant difference vs. self-paced reading at moderate speeds.
Reading and Writing — Springer
2023
“Higher comprehension scores when text is shown sentence-by-sentence vs. full-page”
Segmented presentation outperformed traditional full-page layouts in young readers.
BMC Psychology — Springer
2023
“Segmented content significantly reduced cognitive load and improved comprehension + retention”
Also enhanced vocabulary acquisition across all test stages.
Journal of Educational Psychology
2024
“Structured reading breaks maintained comprehension — without them, it declined”
Trained readers held steady while the untrained control group got measurably worse over time.
Visible Language — Literature Review
2022
“Beyond 75 characters per line, readers lose track and perceive text as overwhelming”
Optimal reading range is 50–75 characters. Too-short lines also disrupt eye movement flow.
Psychonomic Bulletin & Review — Meta-analysis
2022
“Mind wandering negatively correlates with comprehension (r = −0.21) and worsens with age”
Breaking text into chunks creates natural re-engagement points that interrupt drift.
Cambridge Handbook of Multimedia Learning
3rd Ed.
“Deeper understanding when content is presented in manageable segments vs. continuous streams”
Mayer's Segmenting Principle — a foundational multimedia learning principle backed by decades of research.
Google Fonts — Lexend Research
2019
“20% faster reading speed with the Lexend font”
Designed by Dr. Bonnie Shaver-Troup to reduce visual crowding between letters.
PNAS — Zorzi, Barbiero & Facoetti
2012
“20% faster reading and 50% fewer errors with extra letter spacing for dyslexic readers”
Improvement equal to one full year of reading development. Replicated across two languages.
Anglia Ruskin University
2021
“13% faster reading speed for dyslexic children with wider letter spacing”
Also significantly reduced the number of words skipped while reading.
ACM Transactions on Computer-Human Interaction
2022
“35% reading speed difference between best and worst font — no single font suits everyone”
Different fonts suit different readers. Comprehension was unaffected by font choice.
TAY Journal — Karatay & Ünal
2023
“Improvement across all 4 measures with OpenDyslexic: speed, accuracy, prosody, comprehension”
Researchers recommended including OpenDyslexic in school textbooks.
Nature Communications — Pelli et al.
2025
“Visual crowding — letters too close together — is a neurological cause of reading slowness in dyslexia”
Crowding distance varies 2× between people and correlates with brain structure.
Frontiers in Language Sciences
2025
“Blue overlay filters reduced fixation time and increased reading speed in dyslexic children”
Eye-tracking confirmed shorter fixations and longer saccades vs. no filter.
Ophthalmic & Physiological Optics — Wilkins
2002
“25% faster reading with a colored overlay for children with visual stress”
About 5% of mainstream students show this benefit. Not attributable to placebo.
Education and Information Technologies — Meta-analysis
2026
“Screen reading lags print by 0.48 SD — but the gap drops to just 0.03 SD without scrolling”
Controlling text presentation nearly eliminates the digital reading disadvantage.
From our
community on
Here's what other users had to say about Nook.
The customization options are incredible. I've set up Nook exactly how my brain needs it to work.”
Read anywhere, on any device.
Nook works right in your browser. Your reading progress syncs automatically between your phone, tablet, and laptop.
Desktop
Perfect for deep work on your laptop or external monitor.
Tablet
The ideal form factor for long reading sessions on the couch.
Phone
Pick up right where you left off when you're on the go.
What changes when your reader works with you
Read 2x faster
Visual guides keep your momentum high. You get through chapters while others are still scrolling.
Stop re-reading
Autopace and line tracking keep your eyes moving forward, not looping back over the same passage.
Better comprehension
Focus tools mean active reading. You absorb and retain what you read instead of skimming.
Finish the books you buy
Seeing your progress hit 100% is addictive. You'll actually finish the books on your shelf.
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Your reading, your way
Full control over fonts, themes, spacing, and reading tools. Not just dark mode — a truly customisable environment.
All your reading in one place
EPUBs, PDFs, articles, and docs — all in one reader with the same focus tools everywhere.
Explore more reading tools
Nook has specialised tools for every kind of reader.
Questions about the EPUB reader
Everything you need to know
Nook supports standard EPUB files (.epub). Simply upload your file and start reading with all focus tools available. Most EPUB books from online stores work perfectly.
Kindle books use Amazon's proprietary format (AZW/KFX), which Nook can't read directly. However, if you convert your Kindle books to EPUB format using a tool like Calibre, you can import them into Nook.
Yes! Your reading position, bookmarks, and progress are synced across all your devices automatically. Start reading on your laptop and pick up where you left off on your phone.
Absolutely. Nook works on EPUBs, PDFs, DOCX files, any web article, and pasted text. All your reading in one place, with the same focus tools available everywhere. See our focused reading mode at /focused-reading for the full experience.
Nook offers 7 reading fonts including Lexend, Atkinson Hyperlegible, OpenDyslexic, and Georgia. Plus 8 reading themes including dark mode, sepia, cream, and mint. Every combination is designed to reduce eye strain.
Yes! You get 7 days of full access to every feature — unlimited books, articles, and PDFs. No credit card required. After the trial, you can choose to subscribe or not.
Traditional ebook readers just display text. Nook actively helps you focus with autopace (guided reading), line tracking, paragraph chunking, and bionic text. Plus fully customisable fonts, themes, and spacing. It's a reading environment engineered for comprehension.
Absolutely. You can cancel your subscription at any time with no questions asked. Plus, there's a 30-day money-back guarantee if you're not satisfied.
Still have questions?
Contact us