LitBook vs Readlang: A Reader for Your Texts vs Lessons Written for You

By The LitBook team · 2026-07-28 · 2 min read

Disclosure first: we build LitBook. And we'll say this immediately: Readlang is one of the most elegant tools in language learning — focused, fast, and honest about what it does. The comparison is interesting precisely because the two apps answer different questions.

What Readlang is brilliant at

Readlang answers: “help me read this.” A browser extension and web reader — open any page in your target language, click any word (or phrase) for an instant inline translation, and everything you click becomes a flashcard with its original sentence attached. The friction is near zero, the flashcards inherit real context, and the price is famously fair. For a B1+ learner with a reading list — news sites, blogs, fan fiction, whatever pulls you — it turns the entire internet into your textbook.

The question Readlang doesn't answer

• What should I read? The web is a C1 place. Below B1, almost everything you'd naturally open violates the ~98%-comprehension rule, and Readlang can't fix the text — only translate your way through it. Clicking every third word isn't reading; it's decoding.
• Did I understand it? No questions, no grading. Click-translations verify words, not meaning.
• What comes back? Flashcards recycle what you clicked — in the same sentence you clicked it in. New contexts are up to your future reading luck.

What LitBook does instead

LitBook answers: “what should I read today — and did it work?” It generates an original passage at your CEFR level on topics you chose, asks eight questions (grammar, vocabulary, comprehension) with hints in your language, grades instantly, and weaves your missed words into future passages — new contexts, engineered reappearances. The trade-off: our passages are written for you, not by the wider world. Readlang gives you the real web; we give you the right level.

The honest chooser

• A1–B1: LitBook — level-matched text with checked comprehension is what builds the foundation.
• B1+ with a reading list: Readlang makes your list learnable.
• The power combo is real: LitBook as the daily structured workout, Readlang for wild-web expeditions. (The wider landscape: AI apps that generate reading passages.)