Duolingo vs Quazzl AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Duolingo
Learn languages, math, music, and chess through fun, bite-sized lessons. Build vocabulary, grammar, and real-world skills with a science-based methodology. Track progress and stay motivated with a global community.
- Bite-sized language lessons
- Speaking, reading, listening, writing practice
- Math skills development
- Music reading and playing
- Chess strategy and gameplay
- Progress tracking and rewards
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Learn a new language, chess & more with the world's most downloaded education app! Duolingo is the fun, free app for learning 40+ languages through quick, bite-sized lessons. Practice speaking, reading, listening & writing to build your vocabulary & grammar skills. Designed by learning experts & loved by hundreds of millions worldwide, our lessons make learning effective & fun and help you prepare for real conversations in Spanish, French, Japanese, Korean, Chinese, Italian, German, English and more. And now, you can learn CHESS on Duolingo! Whether you're a total beginner or looking to level up your game, you'll love learning chess the Duolingo way. Play matches and fun chess lessons for all levels, no matter the language - chess, ajedrez, xadrez, schach, Шахматы, الشطرنج. • Chess: Learn the moves, level up your game & play matches in our Chess course. Learn the basics, solve fun chess puzzles & improve your strategy with guided lessons. Whether you're new to chess or already play, our course is designed to help you have fun and build real skills. Checkmate! • Math: Forget lectures and math worksheets! Built by learning experts, our Math course makes math feel like a game. Boost learning and fight the summer slide with standards-aligned math lessons for elementary school, middle school, and high school students. • Music: Learn how to read music & play songs in our Music course, no instrument needed! Using an on-screen keyboard, you'll learn bit-by-bit. Whether you're learning a language for travel, school, career or your brain health, you'll love learning with Duolingo. Why Duolingo? • Duolingo is fun & effective. Game-like language lessons & fun characters help you build speaking, reading, listening, & writing skills, plus enjoy fun chess & competitive online chess in one app. • Duolingo works. Designed by learning experts, Duolingo has a science-based teaching methodology proven to foster long-term knowledge retention across language lessons & chess lessons alike. • Track your progress. Work toward your learning goals with playful rewards & achievements when you make practicing language lessons or chess online part of your daily habit. • Join millions of learners. Stay motivated with competitive Leaderboards as you learn languages & play chess online alongside our global community. • Every course is free. Learn Spanish, French, German, Italian, Russian, Portuguese, Turkish, Dutch, Irish, Danish, Swedish, Ukrainian, Esperanto, Polish, Greek, Hungarian, Norwegian, Hebrew, Welsh, Arabic, Latin, Hawaiian, Scottish Gaelic, Vietnamese, Korean, Japanese, English, & even High Valyrian! And now, learn Math, Music & improve your Chess skills with fun, bite-sized lessons. What the world is saying about Duolingo: "Far & away the best language-learning app." - The Wall Street Journal "This free app & website is among the most effective language-learning methods I've tried… lessons come in the form of brief challenges, speaking, translating, answering multiple-choice questions, that keep me coming back for more." - The New York Times "Duolingo may hold the secret to the future of education." - TIME Magazine "Duolingo is cheerful, lighthearted & fun." - Forbes "I Can't Stop Playing Duolingo Chess." - Wired If you like Duolingo, try Super Duolingo for 14 days free! Learn a language fast with no ads & get fun perks like Unlimited Energy & Monthly Streak Repair. If you choose to purchase Super Duolingo, payment will be charged to your Apple account, and your account will be charged for renewal within 24-hours prior to the end of the current period. Auto-renewal may be turned off at any time by going to your settings in the App Store after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Privacy Policy: https://www.duolingo.com/privacy Terms of Service: https://www.duolingo.com/terms
Quazzl AI
Immerse yourself in interactive stories to learn new languages. Choose your own adventure, test your comprehension with quizzes, and improve pronunciation by listening to native speakers. Customize difficulty and explore various genres for a fun and engaging learning experience.
- AI-authored interactive stories
- Choose story direction
- Multiple-choice comprehension quizzes
- Listen to sentence pronunciation
- Adjustable difficulty levels
- Multiple story genres
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Learning a language has never been so much fun! Why settle for banal sentences when you can immerse yourself in exciting stories written according to your rules instead? * AI AUTHOR: Enjoy interactive stories in 56 languages! * YOUR CHOICE: Influence the story by choosing the direction of the story after each chapter! * TEST YOURSELF: Collect points with multiple-choice questions about the content of each chapter! * LISTEN: Listen to how to write a sentence so you can speak like a pro! * ADAPT: Customize your learning experience by adjusting the difficulty level! * YOUR STYLE: Genres like mystery, children's books, romance, science fiction and more! * COMPETITION: Track your progress and compete with others. Download Quazzl and start your language learning adventure today! Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: Quazzl AI at none against Duolingo's shown. Quazzl AI also leads on update cadence (every 2 days vs every 5 days) and iOS requirement (13.4 vs 17.0). Duolingo's advantage is ratings volume (5.5M vs 95) and chart position (#1 vs unranked). On price, rating, review sentiment and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Duolingo sells 16 in-app purchases, starting at $9.99 per month and Quazzl AI sells 3 in-app purchases, starting at $6.00 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.7 for Duolingo against 4.7 for Quazzl AI. That said, the two scores are not equally well evidenced: Duolingo has 5.5M ratings behind it against 95, so its average is the more settled of the two. Written reviews are what separate them: 65% of Duolingo's written reviews are positive against 60% of Quazzl AI's.
Duolingo ships an update every 5 days, Quazzl AI every 2 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Duolingo | Quazzl AI |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (5.5M ratings) — better | 4.7 (95 ratings) |
| Positive reviews | 64.7% of reviews — better | 59.5% of reviews |
| Number of ratings | 5.5M — better | 95 |
| Update frequency | Every 5 days | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #1 — better | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 13.4 — better |
| Further details — not scored | ||
| Size | 490 MB | 40 MB |
| Age rating | 4+ | 9+ |
| Developer | Duolingo, Inc | raffiniert media AG |
Customer experience
Duolingo
Quazzl AI
User reviews
Duolingo
From 5.5M App Store ratingsWhat we love
- 🤩 Fun and entertaining learning experience
- 🎉 Motivating streak and league features
- 🎨 Cute and engaging animations
- 📚 Effective for learning vocabulary and basics
- 🤖 Useful AI-powered features like voice lessons
Room to improve
- 🤖 Issues with voice recognition and pronunciation feedback
- 🤑 Aggressive monetization tactics and paywall for key features
- 🤯 Frustrating heart/health system that penalizes mistakes
- 🤔 Lack of grammar explanations and focus on just memorizing phrases
- 🤷♀️ Inconsistent app experience across platforms
Quazzl AI
From 95 App Store ratingsWhat we love
- 💡 Unique AI-powered language learning
- 👍 Easy to use interface
- 👍 Fun and interesting way to learn
- 👍 Great for reading practice
- 👍 AI-generated stories are helpful
Room to improve
- 🐛 App not working properly
- 🐛 Cannot enter homepage
- 🐛 Subscription refund refused
- 🐛 Misleading about being free
- 🐛 Pay-wall at end of lessons
Bugs and requests
Duolingo
Reported bugs
3 issues- Freezing or crashing during lessons
- Incorrect translations or answers marked wrong
- Inconsistent behavior of certain features like leagues
Requested features
5 requests- Add more languages, especially less common ones
- Improve grammar lessons and explanations
- Allow more flexibility in navigating the course content
- Provide better feedback and corrections for mistakes
- Sync progress and features consistently across app and web
Quazzl AI
Reported bugs
14 issues- Special offer for 3 days in a row not working
- App not working properly
- Cannot enter homepage
- Accidental purchase of subscription
- Refund request refused
Show 9 moreShow fewer
- Developer claiming user wrote 5-star review initially
- Developer ignoring emails and Instagram messages
- Crash when clicking words to translate
- Small stories crash after a few clicks
- App keeps asking for name
- App crashes from second chapter onwards when clicking paragraph translation
- AI generated stories spit out gibberish English
- Severe crashing
- App is busted
Requested features
22 requests- Add way to contact developers
- Fix issue with special offer for 3 days in a row
- Make iPad-native version
- Add ability to tap word and create flashcard
- Improve voice to sound more native
Show 17 moreShow fewer
- Add more languages in the future
- Add male and female voice options
- Add Cantonese pronunciation
- Add word book to record words
- Allow clicking on individual words for definition and pronunciation
- Select one word for specific translation within sentence translation
- Have voice speak out entire story without clicking sentences
- Ability to stop and start story from any word
- Option to delete unneeded AI stories
- Add tools for full learning experience
- Save unfamiliar words and review them
- Track commonly used words for language learning levels
- Add notification for moving to next level
- Increase voice options and custom interface
- Add "log in with email" option
- Improve onboarding process
- Fix app asking for name repeatedly
In-app purchases
Duolingo
- Super Duolingo7 Days trial$9.991 Month
- Super Duolingo7 Days trial$12.991 Month
- Super Duolingo14 Days trial$12.991 Month
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- Super Duolingo2 variants$59.991 Year
- Super Duolingo14 Days trial2 variants$79.991 Year
- Super Duolingo14 Days trial4 variants$83.991 Year
- Super Duolingo7 Days trial$83.991 Year
- Super Duolingo7 Days trial4 variants$95.991 Year
- Super Duolingo1 Month trial$119.991 Year
- Super Duolingo7 Days trial$119.991 Year
- Chest of Gems$0.99
- Barrel of Gems (1200)$4.99
- Chest of Gems (1200)$4.99
Show 3 moreShow fewer
- Cart of Gems (3000)$9.99
- Barrel of Gems (3000)$9.99
- Cart of Gems (6500)$19.99
Quazzl AI
- Monthly Subscription$6.001 Month
- Annual Subscription7 Days trial$60.001 Year
- Lebensdauer$199.99









