LangRead is a web app that gradually swaps words in your book with your target language, letting you learn as you read. Accept each word, see translations and definitions, and track your progress. Works with PDF, EPUB and Kindle formats.
Hey everyone! I built Langread because I just hated how Duolingo helps (no) people learn langauges.
In Langread you can upload a book that you like (in your native language) or just a new book you want to read, The app will gradually swap the words from native language with words from your target language you want to learn.
The idea is that, the further you go into the book, the more words in the new language you will meet, and eventually you will be able to read in the language you wanted to learn.
As well you can:
See translations and hear pronunciations of the words you learn;
Select manually words you are interested to learn
Repeat words using spaced repetition and active recall;
Repetition through typing one learned word time to time directly in the book;
Upload any PDF, EPUB, azw3 (kindle format) (Limit 4.5 MB now, working on it);
Track your progress;
Dark/light/sepia themes.
Features ideas:
Adaptive Grammar lessons based on the grammar used in the book, meaning if a new rule you dont know appeared on your current page, you will get a small grammar lesson with example from the page you are reading;
For example if he saw that you learned the word “book” and now getting “books” he can explain to you how plural words work in English
Optimize app;
Add pronunciations of words (as in typical school books)
Add a new type of pronunciation, where the pronunciation is not written with weird characters nobody understands, but using the language you already speak
French -> using English pronunciations
Bonjour → bon-zhoor (hello)
Merci → mehr-see (thank you)
Croissant → kwah-sahn (croissant)
Add possibility to import from Kindle (if possible);
Add payment system;
Optimize mobile version;
AI explaining/answering questions about paragraphs you select, for more details or explain meaning of a sentence;
Flashcards for words you learn;
Make app available offline;
In case you had time off from the book, talk to book to question what happened before page X;
Sentence translations when more words are already learned.
It’s still an MVP I’d love your feedback: Any features I’m missing? does this technique work for you? Any feedback is welcomed, this is my first launch on ProductHunt!
About LangRead on Product Hunt
“Read books, learn languages one word at a time”
LangRead launched on Product Hunt on August 14th, 2025 and earned 134 upvotes and 12 comments, placing #13 on the daily leaderboard. LangRead is a web app that gradually swaps words in your book with your target language, letting you learn as you read. Accept each word, see translations and definitions, and track your progress. Works with PDF, EPUB and Kindle formats.
On the analytics side, LangRead competes within eBook Reader, Education and Languages — topics that collectively have 98k followers on Product Hunt. The dashboard above tracks how LangRead performed against the three products that launched closest to it on the same day.
Who hunted LangRead?
LangRead was hunted by Vladimir Stojoc. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of LangRead including community comment highlights and product details, visit the product overview.
Vladimir Stojoc
Hey everyone!
I built Langread because I just hated how Duolingo helps (no) people learn langauges.
In Langread you can upload a book that you like (in your native language) or just a new book you want to read, The app will gradually swap the words from native language with words from your target language you want to learn.
The idea is that, the further you go into the book, the more words in the new language you will meet, and eventually you will be able to read in the language you wanted to learn.
As well you can:
See translations and hear pronunciations of the words you learn;
Select manually words you are interested to learn
Repeat words using spaced repetition and active recall;
Repetition through typing one learned word time to time directly in the book;
Upload any PDF, EPUB, azw3 (kindle format) (Limit 4.5 MB now, working on it);
Track your progress;
Dark/light/sepia themes.
Features ideas:
Adaptive Grammar lessons based on the grammar used in the book, meaning if a new rule you dont know appeared on your current page, you will get a small grammar lesson with example from the page you are reading;
For example if he saw that you learned the word “book” and now getting “books” he can explain to you how plural words work in English
Optimize app;
Add pronunciations of words (as in typical school books)
Add a new type of pronunciation, where the pronunciation is not written with weird characters nobody understands, but using the language you already speak
French -> using English pronunciations
Bonjour → bon-zhoor (hello)
Merci → mehr-see (thank you)
Croissant → kwah-sahn (croissant)
Add possibility to import from Kindle (if possible);
Add payment system;
Optimize mobile version;
AI explaining/answering questions about paragraphs you select, for more details or explain meaning of a sentence;
Flashcards for words you learn;
Make app available offline;
In case you had time off from the book, talk to book to question what happened before page X;
Sentence translations when more words are already learned.
It’s still an MVP I’d love your feedback: Any features I’m missing? does this technique work for you? Any feedback is welcomed, this is my first launch on ProductHunt!