CompareOneWord vs. Duolingo
OneWord vs. Duolingo: what's the difference?
Different approaches. Better together.
Duolingo and OneWord both help you learn languages, but they approach learning from different directions. Duolingo offers structured lessons covering vocabulary, grammar, listening, speaking, and other language skills. OneWord focuses on a smaller daily habit: learn one new word, revisit it through quick reviews, and gradually build vocabulary you can remember.
You don't have to choose between them.
OneWordDaily vocabularyOne new word a day, quick reviews through your day, and words that keep coming back.At a glance.
| Feature | Duolingo | OneWord |
|---|---|---|
| Primary focus | Structured language courses | Daily vocabulary learning and retention |
| New vocabulary | Introduced throughout lessons | One new word each day |
| Grammar instruction | Integrated into courses | Not a comprehensive grammar course |
| Vocabulary review | Yes | Yes |
| Spaced repetition | Yes | Yes, with adaptive reviews |
| Listening and speaking | Yes | Vocabulary-focused exercises |
| Stories | Available in supported courses | Topic stories that grow word by word |
| Notifications | Reminders to practice | Quizzes you can answer from the notification |
| Language selection | Broad selection of courses | Spanish, Italian, and French at launch |
| Course progress | Guided learning path | Daily words, topics, and vocabulary progress |
Features vary by language, platform, subscription, and app version. OneWord features described here reflect its planned iPhone launch. Duolingo information comes from Duolingo's own pages. Last reviewed November 2026.
What does Duolingo do best?
Duolingo is designed around a guided learning experience.
You move through lessons that introduce new vocabulary, grammar patterns, and opportunities to read, listen, speak, and translate. It also includes review activities, personalized practice, and spaced repetition to help reinforce earlier learning.
If you want a structured course that guides you through different aspects of a language, Duolingo is a strong option. Its lessons can provide a foundation for developing skills beyond individual vocabulary words.
What makes OneWord different?
OneWord takes a more focused approach. Instead of asking you to complete a full lesson every day, it begins with one new Spanish, Italian, or French word. You'll discover its meaning, hear its pronunciation, and encounter it in a sentence. Then the word continues to appear through different opportunities for practice.
OneWordAnswer quizzes from notifications
OneWord can bring short vocabulary questions directly to your iPhone notifications. For supported questions, you can answer without opening the app.
That makes it possible to practice vocabulary during small moments throughout your day, without starting another lesson.
Learn before you scroll with Word Gate
Word Gate is an optional feature that connects vocabulary practice with apps you already open. Choose apps such as Instagram or TikTok. When Word Gate appears, answer a quick vocabulary question before continuing.
You can proceed whether your answer is right or wrong, control how often Word Gate appears, and pause it whenever you want.
Learn one new word each day
OneWord introduces vocabulary at a manageable pace. Already know today's word? Move on to another. The goal isn't to overwhelm you with a large list of new words. It's to give each word more opportunities to become familiar.
Revisit words over time
OneWord uses spaced repetition to bring older vocabulary back for review. Words you struggle with receive more attention, while familiar words can go longer between reviews. You can also practice through matching, spelling, listening, speaking, translations, and other exercises.
See words become part of a story
Each topic's story grows as you learn: new vocabulary gradually unlocks lines in an unfolding conversation, so you can see how a word contributes to a situation such as ordering at a café or checking into a hotel.
Which app is right for you?
How to use Duolingo and OneWord together.
You don't need two lengthy study sessions. Here's one example of a routine using both apps.
- 1Start with OneWordLearn today's Italian, Spanish, or French word. Hear its pronunciation, discover its meaning, and see it in a sentence.
- 2Continue your Duolingo courseComplete a regular lesson when you have time. Practice vocabulary, grammar, listening, or speaking as you progress through your course.
- 3Answer a quick questionLater, use a OneWord notification to try recalling a word you've learned. If you've enabled Word Gate, an additional question may appear before you continue into one of your selected apps.
- 4Revisit older wordsLet OneWord bring previously learned vocabulary back for review. Spend a little more time on words you find difficult.
The apps work independently, so their vocabulary doesn't need to match. OneWord doesn't automatically import your Duolingo progress or learned words. More in How to use Duolingo and OneWord together.
Can OneWord replace Duolingo?
That depends on what you're looking for.
If your goal is a comprehensive guided language course, OneWord isn't designed to replace everything Duolingo provides. OneWord specializes in vocabulary learning and retention.
You can use it independently, but learning a language also involves grammar, listening comprehension, reading, writing, speaking, and real-world communication. OneWord can be one part of that broader process.
Frequently asked questions.
Does Duolingo use spaced repetition?
Yes. Duolingo uses spaced repetition and personalized practice to help learners revisit vocabulary and grammar.
OneWord also uses spaced repetition, but emphasizes a daily vocabulary habit with additional review opportunities through interactive notifications and Word Gate.
Can I use OneWord with my existing Duolingo course?
Yes. You can continue your Duolingo lessons while using OneWord for additional vocabulary practice.
The apps don't synchronize progress, but you can use them for the same language.
Does OneWord teach grammar?
OneWord introduces vocabulary in sentences and unfolding stories, which can provide exposure to grammar in context.
However, it isn't intended to replace a comprehensive grammar course.
Is OneWord free?
OneWord's launch pricing and subscription options will be announced closer to release.
Is OneWord available for Android?
OneWord is being prepared for an initial iPhone launch. Android availability hasn't been announced.
Sources and product information
Duolingo feature information is based on its official documentation:
- Duolingo Practice tab
- How Duolingo uses spaced repetition
- Duolingo's approach to speaking practice
- Duolingo's free and subscription options
- How to learn a language on Duolingo (courses, Stories, notifications)
OneWord is an independent language-learning app. It is not affiliated with, sponsored by, or endorsed by Duolingo.
OneWord
Keep learning. Make more words stick.
You don't need to abandon the language-learning app you already use. Continue your lessons. Learn one new word a day. Give vocabulary more opportunities to stay with you.
Get notified when OneWord launches on iPhone.
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