Duolingo vs MosaLingua: which to choose, and what each costs
Prices checked 12 Oct 2026; Duolingo's on 7 Oct 2026 · How we check
Duolingo if you want a course with lessons in order.
MosaLingua if you want to build vocabulary a few minutes a day.
| Question | Duolingo | MosaLingua |
|---|---|---|
| A year costs | Free. Super's yearly price is not published; its US App Store purchases run $9.99 to $119.99 | $71.88 a year for all 11 languages, or $9.99 month to month |
| A lesson is | A few minutes of game-like exercises (translate, match, listen, speak), with English throughout. | Flashcards of everyday words and phrases with audio: recall each one, rate yourself, and MosaLingua schedules the next review; dialogues and listening practice sit alongside. |
| Try it | Free for good; Super has a 1-week free trial. | A free trial, then a 30-day money-back guarantee on website and Android purchases (not App Store ones). |
| App Store rating, 10 Oct 2026 and 12 Oct 2026 | 4.7 out of 5 from 5.5 million ratings | 4.6 out of 5 from 1,839 ratings |
| Google Play rating, 11 Oct 2026 and 12 Oct 2026 | 4.7 out of 5 from 50.8 million ratings | 3.9 out of 5 from 10,662 ratings |
How a lesson works in each
Duolingo: course app
MosaLingua: vocabulary app
Side by side
| Compare | Duolingo | MosaLingua |
|---|---|---|
| CEFR levels | A1 to B2 | — |
| A year costs | Free. Super's yearly price is not published; its US App Store purchases run $9.99 to $119.99 | $71.88 a year for all 11 languages, or $9.99 month to month |
| What it is | Course app: Game-shaped lessons for every course; paid tiers remove the ads and the daily limits, and Max adds AI practice | Vocabulary and flashcards: Flashcards of the most useful words and phrases, reviewed on a spaced-repetition schedule |
| Per month at annual billing | — | $5.99/mo ($71.88 a year) |
| Monthly plan | — | $9.99 |
| US in-app purchases | Super in the US App Store: $9.99 to $119.99, depending on the plan. | — |
| Lifetime plan | No lifetime plan | No lifetime plan |
| Free tier | Full free tier with ads and limits; Super removes the ads and limits, and Max adds AI practice (Video Call and Roleplay). | Free download and a free trial; the full set of features needs a Premium subscription. |
| Languages offered | 40 | 11 |
| Speech recognition | Yes | — |
| Live tutoring | No | — |
| Offline mode | Yes · Limited lessons available offline; progress syncs when connected | Yes |
| Placement test | Yes | — |
| Refund or trial | 1 week free trial on Super | A free trial first, then a 30-day money-back guarantee on website and Android purchases; not on App Store purchases. |
| Platforms | iOS, Android, Web | iOS, Android, Web |
| Company | Duolingo, Inc | MosaLingua (digiSchool Group), France |
As an Amazon Associate I earn from qualifying purchases. Links to the app makers' own sites earn us nothing. Commissions never affect which apps we recommend. Affiliate disclosure and how the data is collected.
Duolingo
Course app
In our comparison: strongest on the free tier and teaching depth, weakest on speaking practice.
Free Super removes the ads and limits: $9.99 to $119.99 in Apple's US App Store, depending on the plan, after a 1-week free trial.
Short, game-like lessons make it easy to practise a little every day. You can follow the whole course free, with ads and limits.
MosaLingua
Vocabulary and flashcards
In our comparison: strongest on price and trial and refund terms, weakest on speaking practice.
$71.88 a year $5.99 a month, billed yearly · MosaLingua Premium$9.99 on the monthly plan
Flashcards of the most useful words and phrases, reviewed on a spaced-repetition schedule. A 30-day money-back guarantee.
Duolingo is a course app and MosaLingua is a vocabulary app. Both teach French, Spanish, Chinese, German and 7 more languages.
Which to choose
You want a course with lessons in order
Duolingo
Duolingo is a course app: a few minutes of game-like exercises (translate, match, listen, speak), with English throughout.
You want to build vocabulary a few minutes a day
MosaLingua
MosaLingua is a vocabulary app: flashcards of everyday words and phrases with audio: recall each one, rate yourself, and MosaLingua schedules the next review; dialogues and listening practice sit alongside.
You want to learn without paying
Duolingo
Duolingo is free for good, with ads or limits; MosaLingua has a free trial, not a free plan. What each free route includes is in the table above.
You want to practise speaking
Duolingo
Duolingo: Speech recognition scores how you say words, and Video Call, an AI partner, comes only with the paid Max plan. MosaLingua: Its pages don't say whether it listens to you speak.
Where they really differ
- Price: Duolingo: Free. Super's yearly price is not published; its US App Store purchases run $9.99 to $119.99. MosaLingua: $71.88 a year for all 11 languages, or $9.99 month to month.
- A lesson: Duolingo: A few minutes of game-like exercises (translate, match, listen, speak), with English throughout. MosaLingua: Flashcards of everyday words and phrases with audio: recall each one, rate yourself, and MosaLingua schedules the next review; dialogues and listening practice sit alongside.
- A real person: Duolingo has no tutors; the Video Call in Duolingo Max is an AI character. MosaLingua doesn't mention live tutors.
- Levels: Duolingo states CEFR levels A1 to B2. MosaLingua doesn't state CEFR levels.
- Speaking: Duolingo listens to you speak. MosaLingua doesn't say whether it listens to you speak.
- Trying it: Duolingo: Free for good; Super has a 1-week free trial. MosaLingua: A free trial, then a 30-day money-back guarantee on website and Android purchases (not App Store ones).
- Both: Work offline.
Plans and prices
Duolingo
| Plan | Billing | Price | Per month | Covers |
|---|---|---|---|---|
| Super Duolingo, in the app (US)Apple's listing doesn't say which price is monthly, yearly or Family; the app shows yours at checkout. | Shown at checkout | $9.99, $12.99, $79.99, $83.99, $95.99, $119.99 | — | No ads or limits; 1-week free trial |
| FreeEvery course, with ads and daily limits. | Other | $0 | $0/mo | all languages |
| Super DuolingoSuper | Other | — | — | all languages |
| Super Family | Family | — | — | family up to 6 |
| Duolingo MaxMaxFor English speakers, Max has Video Call and Roleplay in Spanish, French, German, Italian and Portuguese, and Video Call in Japanese, Korean and Chinese (blog.duolingo.com/duolingo-max, read 13 Oct 2026: 'English speakers learning Spanish, French, German, Italian, and Portuguese have access to both Video Call and Roleplay, and those learning Japanese, Korean, and Chinese can use the new Video Call feature'). | Other | — | — | every course; its AI only in some (see the note) |
MosaLingua
| Plan | Billing | Price | Per month | Covers |
|---|---|---|---|---|
| MosaLingua Premium yearlyPremiumSold on MosaLingua's website; $5.99 a month. Includes 600 minutes of MosaChat-AI conversation. | Annual | $71.88 | $5.99/mo | all languages |
| MosaLingua Premium monthlyPremiumSold through the app stores; includes 600 minutes of MosaChat-AI conversation. | Monthly | $9.99 | $9.99/mo | all languages |
What will MosaLingua cost you for the months you study?
Total billed over 12 months
$48.00 less on annual billingOne yearly payment of $71.88.
What each plan covers. Monthly: all languages. Yearly: all languages.
Questions people ask
Is Duolingo better than MosaLingua?
Neither is better for every learner. Choose Duolingo if you want a course with lessons in order, a full course free for good, more speaking practice, a course that states its CEFR levels and more languages to choose from. Choose MosaLingua if you want to build vocabulary a few minutes a day and a trial or money back. In our comparison, Duolingo is strongest on the free tier and teaching depth, weakest on speaking practice, and MosaLingua strongest on price and trial and refund terms, weakest on speaking practice.
Which is cheaper, Duolingo or MosaLingua?
They are priced differently. On Duolingo, every course is free, and Super is priced in the app. On MosaLingua, a year costs $71.88 for all 11 languages.
Do Duolingo and MosaLingua teach the same languages?
Duolingo lists 40 languages and MosaLingua 11, each counting varieties its own way; 11 languages are taught by both. Each app's page here lists its languages, with a page for each language two or more apps teach.