DuoCards - Vocabulary Builder

Contains adsIn-app purchases
4,6
44,7K reviews
1M+
Downloads
Content rating
PEGI 3
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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
16 Apr 2025

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
43,3K reviews
Fraser McMillan
28 March 2025
A great little app that I've used to learn several hundred Spanish words and phrases over the last year. Whenever I come across a word I don't know, I add it to DuoCards, making it an excellent complement to classes and more conventional apps. The UI is simple and has a cute theme/incentive structure. More than worth the subscription 🦣📖
18 people found this review helpful
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DuoCards
04 April 2025
💙Huge thanks and good luck on your language journey! 🚀
Diana Velasco
12 March 2025
Learning German & this is my favorite language learning app so far! (absolutely prefer it over the Duo owl, even though I'm still maintaining my 650+ day streak there, this Duo Mammoth is where I see real improvement and practice regularly). It has traditional flash cards, with explanations and lessons. Also offers level appropriate short movies and practice convos. The free version is great (big fan of the cute Memo sunset). Just got the subscription to support the app and enjoy further perks!
24 people found this review helpful
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DuoCards
25 March 2025
Hi Diana, thanks for the awesome review! 🦣✨This makes us really happy. Team DuoCards
Adam Reis
17 January 2025
The app offers generally good UX for learning flashcards in a modern way. However it has problems that made it unusable. Biggest problem is that the audio is crackling on the latest android version. Might be Android bug, but devs have shown no interest to attempt a fix despite sending video. Also the loading screen takes ages to load, and worse, loads twice each time you open the app. Frustrating, when you just want to get in to learn. Reluctantly ended my paid sub as no fixes forthcoming.
12 people found this review helpful
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DuoCards
17 January 2025
Hi Adam! I'm really sorry to hear about your experience, but I want to extend a huge thank you for all the invaluable feedback you've shared with us 🙏 I'm happy to inform you that the sound issue has been resolved recently, and your suggestions are already on our roadmap. I truly hope to see you back soon! 🦣💙 Tina

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.