DuoCards - Vocabulary Builder

Contains adsIn-app purchases
4.6
48K reviews
1M+
Downloads
Content rating
USK: All ages
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About this app

DuoCard is an app that will help you to learn a new language or improve vocabulary for the ones that you already know. Learn languages with flashcards and video language courses. Use our vocabulary AI builder to find new words!

Learn English, Spanish, French, German, Russian or other languages quickly with our app for learning languages free. These simple language online courses will improve your vocabulary quickly and seamlessly. This is a powerful AI language learning app designed to help you learn a language effectively. In DuoCards you will learn languages with videos and by using flashcards - Learn English, Spanish, French, Italian, Portuguese, German, Korean, Japanese, Russian, Italian, etc.

⭐Language Flashcards Learning Method with Space Repetition
This modern language learning app uses flashcards to view foreign words, phrases or sentences to the learner. Once you have picked a language you want to learn, you will swipe and sort the cards as known or unknown. Space repetition algorithm will then take care of when you should repeat the words to properly memorize the vocabulary.

⭐Guess Words and Phrases to sharpen skills
In learning mode you will tap on the language flashcards to turn it on your native language side and you swipe right the flash cards if you guessed it correctly. Learn English words (or other language) meanings or basic words in your native language and swipe left on the words that you do not know.

⭐Integrated translator
Thanks to Integrated Translator most of the foreign languages are ready to use. You can pick by your desire and learn English, Spanish, French, Portuguese, German, Italian, Russian, Korean, Japanese, or any other from 50+ foreign languages.

⭐Vocabulary Builder and Performance tracker
Save the new words in your English vocabulary decks and see the progress on the dashboard. See which words you know, words you want to learn, and completely learned words with just a glimpse!

⭐Video Language Courses
You can watch any public video from YouTube with subtitles and learn from it. By clicking on unknown words you will pause the video and display the translations.

⭐Read Foreign Language Articles
You can also read articles in a foreign language to learn a new language or learn new English words. If you want to learn Spanish, learn English, or other languages, it is a perfect tool for daily practice. With our free language learning apps features, you can focus on learning English, improving your vocabulary, and mastering new phrases every day.

⏩Features of DuoCards – Language Learning with Flashcards & Videos:
✔️ Simple and easy foreign language learning app for free
✔️ Language flashcards learning technique for quick retention of information
✔️ Tap on any flashcard to see the English flashcard and learn the meaning
✔️ Learn languages free from a collection of world languages in your free time
✔️ Use vocabulary builder to find new words, phrases and sentences in other languages
✔️ Learn English words from your native language or learn a new language easily
✔️ Easy swiping and tapping controls to move the language flashcards
✔️ Save the phrases, words, and sentences you want to learn in other languages
✔️ Enter guess mode to evaluate your language learning free skills
✔️ Use the integrated translator to learn languages free and save new words
✔️ Add words from shared sets or read foreign language articles
✔️ Share words you don’t know with Duo Cards and learn their meaning

Learn a new language by using a powerful language learning app. The new learn languages free app is here to help you. If you want to learn languages, improve your English learning skills, or find free language learning apps, it is your best solution. Start to learn English free with the best learning English app. Download DuoCards – Language Learning Flashcards today! Learn a new language fast and easily with our video language courses. Vocabulary builder - Memorize it easily and improve your vocabulary!
Updated on
25 Jul 2025
Events and offers

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity
This app may collect these data types
Personal info, Financial info and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.6
46.4K reviews
Andreea Rat
19 June 2024
The concept is good. However, I have chosen the german language, the "hard" deck of cards, and there are no articles for substantives, the verbs are not written in the infinitive form, translations are poor in some cases, and sometimes the example sentences have nothing to do with the word given. As a free app is ok, I wouldn't pay for it, given that it needs improvement. The AI feature is pretty useless.
5 people found this review helpful
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DuoCards
16 July 2024
Hi, could you let us know which set or course it was at info@duocards.com so we can fix it?🙏 DuoCards is a community application - everyone can create their own set of cards, publish it publicly so that other people can learn from it. You might want to try out our official courses and sets, we believe you will love them! Michaela from DuoCards
Enja Tosch
16 September 2024
(After two days:) I like it. Has my language (rare), it doesn't restrict free use too much (20 new cards a day) and there are so many options here - so many shows and articles etc that I didn't know of before! A great app to find more resources for your language. With transcripts and help to understand them. I also like that it allows me to add my own cards and that it offers grammar etc tips when struggling with a card. On top of a cute but simple background mascot - definitely a fan so far.
8 people found this review helpful
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AnneSo Lindau
14 August 2024
Great way to learn vocabulary through different memory channels! (written, oral, pictures and context). As soon as you enter a new word, it automatically creates a flash card for you with all those elements. The best way to memorize new words! Very friendly and nice app design, fun to use! The best part : the AI language assistant that is like a personal teacher. I'm always asking it to show me the different verb forms, the use of different words or expression, etc. I absolutely love it!
3 people found this review helpful
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What's new

Smarter learning algorithm that helps you learn more effectively.
Enhanced AI that provides better grammar explanations, personalized stories, and more accurately responds.
New study sets with new vocabulary focused on learning popular topics.
Optimized notifications system to help maintain your daily streak.
Performance upgrades and bug fixes for smoother studying.