Readuet vs LingQ vs Beelinguapp vs Kindle Immersion Reading: an honest comparison

By Pavel Kharakh Published October 22, 2026 Updated November 3, 2026

Readuet, LingQ, Beelinguapp and Kindle Immersion Reading compared on synced audio, word lookup, vocabulary review, languages and price.

We make Readuet, so read this with that in mind. We've tried to be fair, including about where the others beat us. Every competitor fact below comes from that company's own website or help pages, checked on 22 October 2026. Where a price wasn't shown to us (prices on these sites change by country), we say so instead of guessing.

The short version

All four let you read and listen at the same time. They differ in where the content comes from and what happens when you don't know a word.

• Readuet lines up an ebook with its audiobook to the sentence, transcribes podcasts so you can read along with them too, and turns every tapped word into a vocabulary item with spaced-repetition review. A free library of over 2,700 public-domain books in ten languages; your own audiobooks on a paid plan.
• LingQ is a mature learn-from-content platform built around lessons: a big library, importers for YouTube, Netflix, podcasts and articles, word tracking, more than 50 languages. Books go in too, but as a course of short lessons, not as a book.
• Beelinguapp shows a story in your target language and your own language side by side, with narration from native speakers. Built for beginners and kids.
• Kindle Immersion Reading highlights the text of a Kindle book while its Audible audiobook plays. It's for commercial books you buy from Amazon, not a language-learning tool.

Readuet

You add an ebook and its audiobook. Readuet transcribes the narration and aligns it with the text so that every sentence gets a start time, an end time and a confidence score. The sentence being read is the one that's lit; press and hold any sentence and choose Play from here to send the narrator there.

Tap any word and you get a translation of that word in that sentence, not a dictionary list. The word is saved under its dictionary form, so in ten languages (including English, Spanish, French, German, Italian, Portuguese, Polish, Dutch and Ukrainian) learning one form covers the others. Saved words are tinted by CEFR level and move through a five-step familiarity ladder; due words come back as flashcards scheduled by FSRS, and meeting a word in a real book without tapping it counts as a review too.

The free plan includes our library of over 2,700 public-domain books in English, German, Spanish, French, Polish, Dutch, Italian, Russian, Portuguese and Ukrainian, each labelled with a CEFR reading level. Texts come from Project Gutenberg, Wikisource and Wolne Lektury, and over 1,100 of the books have a volunteer recording from LibriVox or Wolne Lektury. Tap-to-translate and review are free on all of them, and so are narration and read-along on the books already prepared. You can upload your own ebooks for free too. Paying is for audio: Solo ($4.99/month or $29.99/year) narrates any library book and lines your own EPUB, MOBI, AZW3, FB2 or TXT up with your MP3, M4B and so on when you ask, by tapping a sentence or pausing; Duet ($7.99/month or $49.99/year) gives you the live highlight on your own uploads, reading along about 30 seconds after you upload, transcribes any podcast episode so you can read along with it, and adds a daily story built from words you owe reviews on. Both paid plans start with a free week.

It runs in the browser at app.readuet.com and on iPhone; the Android app isn't out yet. KOReader can use Readuet as its progress-sync server, and for Kindle you can photograph a page and Readuet finds that spot in the book.

Where we're weak: our library is about 2,700 books, not tens of thousands of lessons. Chinese, Japanese and Korean aren't supported, nor are PDFs. Grouping word forms by dictionary form covers ten languages; others fall back to exact matching. And we don't sell books: for your own uploads you need to own both the ebook and the audiobook already.

LingQ

LingQ's homepage pitches learning "with shows, podcasts, and books you love" in more than 50 languages. Its unit is the lesson: a text, usually with audio, from its library (tens of thousands of lessons across news, culture and entertainment) or one you import. A browser extension turns YouTube videos, Netflix episodes, podcasts and articles into lessons, and LingQ's AI tools add transcripts, translations and generated audio.

Looking up a word

Words you have never seen are shown in blue. Click one and a panel opens with a few candidate meanings: meanings other learners saved for that word (LingQ calls them hints), integrated dictionaries, and, since 2024, an AI meaning based on the sentence, which can be turned off in the reader settings. You pick one, or write your own, and the word becomes a yellow "LingQ" saved with the phrase you found it in (LingQ help). Turn the page and the blue words you didn't click are marked known by default.

In Readuet a tap shows one translation of the word in its sentence, under the word itself, and saves it. There's no list to choose from. That is less flexible (you can't pick another learner's wording) but it's one step instead of two.

Books on LingQ

You can import an ebook, but it doesn't stay a book. LingQ's own guide says an imported ebook "will automatically get split into 2000 word parts and turned into a course" (LingQ blog, updated September 2025). Learners on LingQ's forum complain that the split ignores chapters, and that headings, paragraphs, emphasis and images are lost (forum thread, May 2024). A full-length novel becomes dozens of lessons of plain text.

Audio is per lesson too. You can attach an audio file to a lesson and have LingQ generate timestamps for it, and it asks that the text match the audio exactly (LingQ help). There's no step that takes one audiobook and lines it up with a whole imported book. LingQ's own ebook guide calls cutting an audiobook into lesson-sized pieces "quite tedious" and suggests listening in another app instead. Without your own audio, lessons use text-to-speech.

Pricing: the free plan is capped. LingQ's help centre says free accounts can create 20 LingQs (saved words), and LingQ's own comparison lists 5 imported lessons and 1 audio playlist, with flashcard quizzes and offline access on Premium only. The pricing page showed us prices in Polish złoty (geo-dependent): Premium 47.99 zł a month or 379.99 zł a year, Premium Plus 102.99 zł a month or 899.99 zł a year. In US dollars, LingQ's blog (August 2026) gives $14.99 a month or $10 a month billed annually, and the US App Store lists Premium at $14.99 a month and $119.99 a year. Check the current price for your country.

Where LingQ is better than Readuet: far more languages, Asian languages included; a huge lesson library plus import from video, podcasts and the web, which we don't do; community meanings to choose from; an active community; years of polish; Android, iOS and web all available today. If your material is short pieces rather than whole books, LingQ is built for exactly that.

Beelinguapp

Beelinguapp's idea is parallel text: the story in the language you're learning, with your own language beside it to peek at when you get lost. Many stories are narrated by native speakers, and the App Store listing describes "karaoke-style scrolling text" synced to the audio. The site says content is translated and narrated in 23 languages, and there is a BeKids section of illustrated children's books with simplified sentences. You can add words to a glossary and practise them with flashcards. The FAQ says a text you open is downloaded for offline reading.

As far as we could find, Beelinguapp works with its own library; we found no option to import your own books. Its FAQ names Android and iPhone; we didn't see a web version mentioned.

Looking up a word happens inside that parallel layout: you select a word to add it to your glossary, and the full translation of the passage is a swipe away. (App Store reviewers describe pressing and holding a word for its translation and pronunciation; we didn't find this in Beelinguapp's own help.)

Pricing isn't shown on beelinguapp.com. The US App Store lists Beelinguapp Monthly at $7.99 and Yearly at $49.90, plus several promotional tiers. The FAQ says Premium unlocks all content, lets you change languages at any time, and removes ads.

Where Beelinguapp is better than Readuet: side-by-side full translations are a gentler start for absolute beginners than tapping word by word; it has content written for kids; it covers languages we don't.

Kindle Immersion Reading (Whispersync for Voice)

Amazon now calls the sync feature Read & Listen, "formerly called Whispersync for Voice". Immersion Reading is the read-along part: in Amazon's words, the text "highlights as the narrator reads". It works when you have both the Kindle eBook and the Audible audiobook of the same title; Amazon's help also says that to use Immersion Reading in the Kindle apps, titles must be purchased, not borrowed. If you own the ebook, Amazon offers the matching audiobook at a discount ("Add Audible narration"). The discount varies by title.

Where it works: Amazon documents Immersion Reading in the Kindle apps on iPhone, Android and iPad, and on Fire tablets with Fire OS 7 or later. For Kindle e-readers, Amazon's help describes switching between reading and listening without losing your place (Audible's help lists e-readers from 2022 on), not the highlighted read-along.

There is no language-learning layer on top of the read-along. Kindle's normal lookup still works: select a word and you get a dictionary entry, Wikipedia and a machine-translation card, and on e-readers looked-up words go into Vocabulary Builder flashcards. There's no review scheduling, and the translation card translates the word or phrase you selected, not the word as used in that sentence. Language coverage depends on which books are sold as matched pairs in your store; we couldn't find a published list.

Where Kindle is better than Readuet: the current commercial catalogue, bestsellers included, with professional narration and pairs that are matched for you; it's built into a device and ecosystem millions of people already own; there's nothing to upload.

Side by side

Prices are US list prices as of 22 October 2026 and vary by country.

Who should pick which

• Pick Kindle Immersion Reading if the book you want is a current bestseller, you already live in Amazon's ecosystem, and you're reading in a language you're already comfortable in. Nothing beats a professionally matched pair you can buy in one click.
• Pick Beelinguapp if you're just starting a language, or choosing for a child, and want the full translation beside the text rather than looking things up word by word.
• Pick LingQ if you're learning a language we don't cover (Japanese, Chinese or Korean, say), or your material is short: YouTube, Netflix, podcasts, news and articles, with a big community around you. It's a weaker fit for reading a whole novel with its audiobook.
• Pick Readuet if you want to read whole books while listening, matched sentence by sentence, with every word you tap becoming a word you'll actually review. That goes double if you already have your ebooks and audiobooks as files, or are happy with public-domain classics, which cost nothing.

Plenty of people will happily use two of these.

Frequently asked questions

Do I need to buy the ebook and the audiobook for Kindle Immersion Reading?

Yes. Amazon's help says you need both the Kindle eBook and the Audible audiobook, and that titles must be purchased to use Immersion Reading in the Kindle apps. If you own the ebook, Amazon often offers the audiobook at a discount.

Does Kindle Immersion Reading work on a Kindle Paperwhite?

Amazon documents the highlighted read-along in the Kindle apps for phones and tablets and on Fire tablets. For Kindle e-readers it describes switching between reading and listening, not highlighting while you listen. Check Amazon's help for your exact model.

Can I use Readuet with books I bought on Kindle or Audible?

Not directly: books bought on Kindle or Audible stay in Amazon's apps. Readuet works with EPUB, MOBI, AZW3, FB2 or TXT and audio files you have, and with the free public-domain library. If you read on a Kindle, you can photograph a page and Readuet will find that place in its copy of the book.

Is Readuet a replacement for LingQ?

For some people. If what you want is whole books with their audiobook, read along sentence by sentence, Readuet does that and LingQ doesn't: on LingQ a book becomes a course of ~2,000-word lessons, each with its own audio. If you need Asian languages, want to import YouTube or Netflix, or value LingQ's community and lesson library, LingQ covers more ground.

What does Readuet cost?

The free plan has no time limit: the public-domain library with tap-to-translate and spaced-repetition review, read-along on the books already prepared, and your own ebooks. Solo is $4.99 a month or $29.99 a year and adds narration for any library book and your own audiobooks; Duet is $7.99 a month or $49.99 a year and adds the live highlight on your own uploads, podcast transcription for read-along, and today's story. Both paid plans start with a free week.