KoKo
EN

A Duolingo alternative, for vocabulary

Duolingo and KoKo do different jobs. Duolingo gives you a whole language course, in short lessons. KoKo deals with words only, and goes further on that point. KoKo is our app; this page says where Duolingo does better, and many people gain from using both.

What Duolingo does very well

Duolingo trains the whole language: sentences to translate, listening, pronunciation, grammar through practice. The path is guided from day one, lessons are short, and the game makes you want to come back. The app runs on iPhone, on Android and in the browser, and most of it is free, with ads.

What KoKo does differently

In KoKo, you choose what you learn: 38 topics, from the human body to finance, and +6,000 words sorted into three levels. Each word you have learned comes back six times, at intervals that grow from one day to four months, and you type it in full. No ads, no account to create, and everything works offline.

KoKo and Duolingo at a glance

CriterionDuolingoKoKo
DevicesiPhone, Android, browseriPhone
ContentA guided course, lesson after lessonReady-made lists: +6,000 words, 38 topics
What you learnA whole language: sentences, listening, grammarThe vocabulary of 19 languages
ReviewsRecall exercises along the courseSpaced repetition, six reviews set in advance
Without payingMost of it, with adsOne topic out of 38; the rest by subscription
AdsIn the free versionNone

Stay with Duolingo if…

  • you are a beginner and want a full course, guided step by step;
  • you want to work on listening, pronunciation and grammar;
  • you want to learn without paying;
  • you learn on Android or on a computer.

Try KoKo if…

  • you get by with the grammar and it is the words you are missing;
  • you want to choose your topics: work, travel, health;
  • you want to be able to write the words, not just recognise them;
  • you want to add real vocabulary work to Duolingo.

Which one is right for you?

Four questions, one honest answer: it is not always KoKo.

Frequently asked questions

Can KoKo replace Duolingo?
No, not for learning a language from scratch: KoKo teaches neither grammar nor pronunciation. It replaces or complements Duolingo for one thing only, vocabulary.
Can I use KoKo and Duolingo together?
Yes. Duolingo for sentences and listening, KoKo to widen your vocabulary topic by topic and keep it over time.
Is KoKo free?
KoKo is free to download. The “Home and furniture” topic (150 words) is open to everyone, along with reviews, reminders and widgets. The other 37 topics and custom decks need the KoKo Plus subscription; its price is shown in the app before any purchase.

How KoKo makes words stick

Comparison updated in October 2026 by KoKo. Offers change: check each app’s terms on its own site.

Other comparisons

The app, language by language

Your first word is waiting

+6,000 words to learn in 19 languages, a few minutes a day.

  • Reviews at the right moment
  • +6,000 words, 38 topics
  • Works offline
Download on the App Store

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