You have a book you want to read in another language. You need help with unfamiliar expressions, somewhere to keep useful vocabulary, and a way to return to the story without losing your place.

Start with Readlang if your main goal is reading text with quick translations and vocabulary practice. Consider LingQ if reading is part of a wider routine involving audio, transcripts, and imported media. Both can support books, so the decision comes down to the assistance you need and the limits you will encounter.

LingoReader publishes this comparison. It draws on the providers' documentation rather than a hands-on performance test. Product and plan details checked on 18 October 2026.

Choose around your reading routine

Readlang's documented features include inline translations, contextual explanations, vocabulary review, and a Web Reader for online material. That makes it a sensible starting point when your typical session begins with an article or book you have already chosen. Its flashcards use words you translated, and its vocabulary manager supports export to Anki. Readlang features

LingQ connects reading with a broader collection of listening and viewing material, including podcasts and imported video content. If you regularly move between a written passage and its audio, that wider workflow deserves attention. LingQ overview

These are starting recommendations, not judgments about which interface you will prefer. Readlang also has listening features. LingQ also supports someone who mainly wants to read books. Choose based on the activities you expect to repeat.

Check what happens to your book

Readlang documents uploading DRM-free EPUB files, with chapter navigation and text formatting. LingQ also documents ebook imports. Readlang EPUB guidance, LingQ ebook guidance

Before comparing anything else, try the edition you actually intend to read. Check the opening paragraphs, chapter boundaries, italics, and any footnotes you need. A successful upload does not necessarily tell you whether a complicated edition will be comfortable to use.

Pay particular attention to how LingQ counts imports. Its support guidance explains that an imported book can become several lessons. Five imported lessons should not be interpreted as five complete books. LingQ's explanation of ebook import limits

Use a file you have permission to upload. A book available inside a bookstore's reading app is not automatically an unrestricted EPUB you can move elsewhere.

Compare the free plans carefully

The free plans limit different activities:

Readlang Free: unlimited single-word translations, text uploads and flashcard practice. You get ten phrase translations per day, up to six words per phrase, and ten context explanations per day. Word highlighting has a separate limit of 200 words in total.

LingQ Free: twenty saved words or phrases and five imported lessons. The saved-vocabulary allowance is not a count of every word you read, and a book can use several lesson imports.

Sources: Readlang pricing, LingQ plans.

Readlang currently lists Premium at US$6 monthly or US$48 annually. The annual amount is a different billing commitment from paying each month. LingQ offers several subscription durations; check the currency, renewal terms, and total charge shown for your location. Readlang subscriptions, LingQ subscriptions

A useful question is: Which limit would interrupt my normal reading? Someone who mostly checks individual words may have different needs from someone who regularly needs whole expressions explained.

Try the same passage in both

Use this original example, or choose a similarly short passage from your book:

Lucía abrió el bolso y buscó las llaves. Entonces se dio cuenta de que las había dejado en casa.

Lucía opens her bag, looks for her keys, and realizes she has left them at home.

Compare three tasks:

  1. Look up bolso to resolve a single noun.
  2. Ask for help with se dio cuenta de que, which means “realized that.”
  3. Save one useful expression and return to the paragraph.

Notice whether the assistance answers your actual question. Translating cuenta alone may not explain the expression. A helpful result should let you understand what Lucía realizes and continue reading.

Next, open the saved vocabulary. Can you see enough context to remember this scene? Does the question ask you to recall something useful? Both products document vocabulary review, but the review experience is worth trying yourself. Readlang flashcards, LingQ vocabulary review

If you read on a phone, repeat the exercise there. For a commute without connectivity, test offline access separately. LingQ documents offline access for Premium; confirm exactly which activities remain available on your device. LingQ learner guide

Make the decision after a reading session

Choose Readlang first when your priority is bringing text into a reader, resolving unfamiliar language, and revisiting vocabulary. Choose LingQ first when books sit alongside a substantial listening or imported-media routine.

Before subscribing, finish a short session and ask: Did I understand the passage? Could I return to it easily? Would I want to open this tool tomorrow?

If neither fits, our LingQ alternatives guide covers other approaches, including software you run yourself. For a closer look at our own beta, see LingoReader vs LingQ. You do not need to move your entire library to find out whether a different reading routine suits you.