Your next great read has a voice. Meet Earlo.
earloby Boston Research Journals

Make an audiobook of your next read.

Turn books, PDFs and research papers into natural audio.
Listen offline on your iPhone or iPad, and follow every word.

Download Earlo Hear it for yourself
Made for iPhone & iPad · Apple Watch companion
TAKE A LITTLE SCROLL
Earlo home screenEarlo reader screenEarlo voices screen
A library that moves with you.
NATURAL VOICES. NO CONNECTION NEEDED.
MORE THAN TEXT TO SPEECH

A little app.
A world of listening.

Everything you want to read. More ways to make it yours.

Earlo reader screen

Read it. Hear it. Feel it.

Words come alive with natural voices and synchronized read-along.

A voice that feels right.

Four voices. Two accents. Your kind of company.

Offline. On your terms.

Your device does the talking. No cloud speech required.

Earlo notes and bookmarks

Keep the good parts.

Notes, bookmarks, and ideas worth finding again.

Earlo playback controls on Apple Watch

Right by your side.

From your iPhone to a quick tap on your wrist.

MAKE ROOM FOR WHAT MOVES YOU

A good book.
A long walk.
A little more you.

The things you want to read shouldn’t have to wait for a quiet room and an empty calendar. Earlo gives them a voice, so they can meet you wherever you are.

Download Earlo
Earlo import screen
YOUR READING, ALL TOGETHER
01 / BRING YOUR WORLD

So much to read.
So easy to begin.

A book you’ve been meaning to finish. A paper you need to understand. An article you saved for later. Give them all a place to be heard.

  • EPUB, PDF, Word, text, Markdown & more
  • Scan pages or import photos with on-device OCR
  • Save webpages, paste text, or use the Share sheet
  • Review your import and keep the original
Explore every import option
Earlo reader screen
Your pace. Your place.
ONE STORY. TWO WAYS IN.
02 / STAY WITH THE STORY

Listen closely.
Read along.

Follow each word as it’s spoken. Tap a passage to jump in, explore a page at your own pace, and return to the voice whenever you’re ready.

  • Word and sentence highlighting
  • Adjustable speed, pitch, and sleep timer
  • Original PDF and continuous reading views
  • Smart resume, chapter navigation & saved places
Meet your next narrator
Earlo collections screen
A little, every day.
A HABIT THAT FEELS LIKE YOU
03 / FIND YOUR RHYTHM

Your library.
Your way through it.

Collect by curiosity. Queue up your next chapter in life. Find a sentence you remember, and make a little space for reading every day.

  • Collections and a whole-document listening queue
  • Offline search across titles and document text
  • Bookmarks, passage notes, and portable exports
  • Daily streaks, listening activity & reminders
Discover the thoughtful details
GO ON. HAVE A LISTEN.

Not just spoken.
Worth listening to.

Meet the voices that turn your reading into a little company. Choose your accent, find your favorite, and make yourself at home.

Real Earlo narration. An original sample passage.

Heart

American English · Warm & gentle

Read the sample passage

The library was quiet that afternoon. Outside, the rain had softened to a whisper, and the city seemed to pause. She opened the book, found the page she had marked, and began again. Some stories ask us to hurry. This one invited her to stay.

In the app, voices are generated on your device.
IN YOUR HAND. BY YOUR SIDE.

One library.
More room to listen.

Earlo reading view on iPad
Earlo home screenEarlo notes screenEarlo activity screen
Earlo companion playback on Apple Watch

iPhone & iPad. Apple Watch companion.
Watch controls playback on your paired iPhone.

FOR THE FOREVER CURIOUS

Big ideas.
A clearer way in.

Turn a stack of papers into listening you can follow. Bring your research from DOI, arXiv, or Zotero, then focus on the ideas inside.

  • DOI & arXiv lookup with metadata review
  • Read-only personal and group Zotero imports
  • Skip recognized citations and reference lists
  • Scientific narration and pronunciation controls
  • Export RIS / BibTeX citations & Markdown notes
Explore research reading
A DIFFERENT WAY TO READ A PAPER
THE READING ROOM 01

Let the ideas
come through.

There is more than one way to find your way into a new idea. Sometimes, it begins with listening.

Hear the prose. Keep the source. Move through sections, save a thought, and return to the original whenever you need to look closer.

[1] References preserved.
DOIarXivZotero

Research narration preserves your source. Complex equations, tables, and unusual layouts may need review.

PERSONAL REALLY MEANS PERSONAL

Your words stay yours.
Your voice stays close.

Natural narration happens on your device. Your saved reading works without a connection, an Earlo account, or a cloud speech service.

On-device narration No Earlo login Optional private iCloud sync
Download Earlo
SMALL DETAILS. BIG DIFFERENCE.

Thought through.
All the way.

From the first import to that one sentence you want to remember. Here’s what’s inside Earlo.

Make it your listening time
01
IMPORT

Bring your reading

Books & documents

Import EPUB, PDF, Word (DOCX), plain text, Markdown, HTML, and RTF. Keep your own library in one place.

Photos, screenshots & scans

On-device English OCR turns images and scanned pages into reading. Review, correct, and reorder pages before saving.

Webpages & pasted text

Save an article from its URL, paste a passage, or send a document through the iOS Share sheet. Saved reading works offline.

Research libraries

Look up DOI and arXiv papers, review their metadata, or import selected PDFs from a personal or group Zotero library.

02
LISTEN

Make it sound like you

Four natural voices

Choose Heart or Michael for American English, Emma or George for British English. Preview each voice before choosing.

Your pace, your pitch

Listen from 0.5× to 2× speed, adjust pitch, and use a sleep timer to wind down at your own pace.

Pronunciation dictionary

Teach Earlo names, specialist terms, or phrases. Set a rule for one book or use it across your library.

Choose what gets read

Skip headers, footnotes, citations, URLs, or selected text with narration rules. The original source stays intact.

Narration Lab

Explore generation pace, same-accent voice blends, passage grouping, and pauses. Preview your tuning on a passage.

Smart resume

Return to your saved position, use contextual resume, skip 15 seconds, or move between chapters and pages.

03
READ & REMEMBER

Keep every good idea

Word-by-word read-along

Follow the spoken word and sentence. Tap a word to seek, browse freely, then return with Follow narration.

Original PDF & reading view

Move between clean, continuous reading and the original PDF. Adjust reader type, size, spacing, and appearance.

Notes & bookmarks

Save a place or annotate a selected passage. Find your notes and bookmarks together, then jump back into context.

Ask AI, on your terms

Prepare a selected passage and citation for ChatGPT, Claude, or Gemini. Review, copy, or share it yourself.

Portable notes & citations

Export Markdown notes and research citations in RIS or BibTeX for the rest of your workflow.

04
ORGANIZE

A library with a rhythm

Search inside your library

Find a title or search the words inside saved documents, without an internet connection. Rename items to make them yours.

Collections & listening queue

Group books into collections. Add whole documents to a queue, reorder them, or choose what plays next.

Streaks & listening activity

Build a daily reading habit. See your reading streak, recorded listening time, and activity over the last seven days.

Reading reminders

Set your own daily reminders, with encouraging messages that help make a little reading part of your day.

Control your storage

Choose a rolling narration cache from 100 MB to 5 GB. Your originals, notes, and finished audio exports stay separate.

05
CONNECTED, WHEN YOU CHOOSE

Go wherever life goes

Optional private iCloud sync

Sync your library, saved positions, notes, collections, and supported preferences through your Apple Account. Local listening remains independent.

Apple Watch companion

Browse your library, control iPhone playback, seek with the Digital Crown, and save bookmarks from your wrist.

Siri & Shortcuts

Resume a book, play a named title, pause, skip, bookmark, set speed or a sleep timer, and check your reading activity.

Widgets & system playback

Resume from Home or Lock Screen widgets. Use native Now Playing, Control Center, headphones, and Dynamic Island controls.

MP3 export

Export a book, chapter, passage, or page range with your chosen voice and settings. Pause and resume export jobs.

Native & accessible

Made for iPhone and iPad, with Dynamic Type, VoiceOver labels, light and dark appearances, and Reduce Motion support.

Earlo reader screen
Earlo home screen
Earlo voices screen
Earlo notes screen
Earlo activity screen
Earlo search screen
A LITTLE ROOM FOR READING

For the way
you live.

There’s no one way to be a reader.

THE DAILY COMMUTE

Turn travel time into chapter time.

A saved book, a pair of headphones, and a little space to yourself. Keep listening when your connection drops.

THE CURIOUS MIND

Give that reading list a real chance.

Bring saved articles and notes into the same library as your books. Queue them up and make a start.

THE RESEARCH ROUTINE

A fresh way into a dense paper.

Listen through the prose, skip recognized citations, and bookmark the passages you want to return to.

THE EVENING WIND-DOWN

One more page. Eyes closed.

Choose a voice, slow things down, and set a sleep timer. Your place will be there in the morning.

THE LONG WALK

Take a story around the block.

Keep your phone in your pocket. Pause or save a bookmark from the Watch companion.

THE SECOND READ

Hear something you missed.

Follow the highlighted words as you listen, make a note, and return to an idea in its original context.

A FEW THINGS YOU MIGHT WONDER

Good questions.
Clear answers.

Earlo is a personal reading and listening app for iPhone and iPad. Add your own books, documents, articles, and research papers, then read them or listen with natural English voices generated on your device.

FROM THE READING ROOM

Make more of
your next read.

Word highlighting in EarloFROM PAGE
TO POSSIBILITY.
THE EVERYDAY GUIDE · 3 MIN READ

How to listen to PDFs and EPUBs with Earlo.

Bring in your first book, find a voice you love, and make listening part of your day.

Earlo reading on iPadFOLLOW
YOUR CURIOSITY.
THE RESEARCH GUIDE · 4 MIN READ

How to listen to research papers with Earlo.

From DOI and Zotero to focused listening, useful notes, and the original source.

Explore all reading guides
BY BOSTON RESEARCH JOURNALS

A love of reading.
A home in research.

Earlo is a reading and listening app by Boston Research Journals. It brings on-device narration to books, documents and research papers, with tools for following the source and keeping useful notes.

Built for everyday reading and deeper exploration, Earlo makes another kind of room for the words that matter to you.

About Boston Research JournalsMeet Earlo
Earlo reader screenEarlo notes screenEarlo voices screen
Your next great listen starts here.
Earlo

Make it your
listening time.

Your books. Your ideas. Your next great listen.

Download Earlo Hear the voices
iPhone · iPad · Apple Watch