Comparison

ClassDojo vs Duolingo

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ClassDojo

This platform connects teachers, parents, and students to foster positive classroom communities. It facilitates communication, shares school updates, and provides engaging learning content for children. The goal is to create an enjoyable educational experience for everyone involved.

Highlights
  • Teacher-parent communication
  • Photo and video updates
  • Student learning content
  • School news and updates
  • Classroom community building
Features
Read full description

It’s time to build better classrooms. Class Dojo is a game-changing platform designed for teachers, parents and kids. The end goal? Giving kids an education they love. Here’s how. * Teachers and parents can safely and easily communicate throughout the school day * Parents get photo and video updates from their child’s teacher, so they can feel like they’re there * Kids get fun learning content at school and at home * Everyone stays in the know on the latest and greatest school news and updates. *Did we mention it’s free? Join the millions strong in 180 countries that are making their classrooms feel more like communities. "I’ve divided my time teaching as B.C. and A.C.: before ClassDojo, and after ClassDojo. I never want to go back!" — Jen E., an elementary school teacher The Plus Experience When parents start using ClassDojo and are ready for more of what they love, there’s ClassDojo Plus—more memories, more moments, more milestones. And yes, more answers to “how was school today?” Terms of use: https://www.classdojo.com/terms Privacy policy: https://www.classdojo.com/privacy

About

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.

Highlights
  • Bite-sized language lessons
  • Speaking, reading, listening, writing practice
  • Math skills development
  • Music reading and playing
  • Chess strategy and gameplay
  • Progress tracking and rewards
Features
Read full description

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

Screenshots

ClassDojo4 screens
Duolingo4 screens

Verdict

The call

The clearest difference is ads: ClassDojo at none against Duolingo's shown. ClassDojo also leads on update cadence (every 2 days vs weekly). Duolingo's advantage is chart position (#1 vs #4). On price, rating, review sentiment and ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ClassDojo sells 17 in-app purchases, starting at $6.99 per month and Duolingo sells 16 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for ClassDojo against 4.7 for Duolingo. Both are backed by a comparable volume of ratings — 4.1M and 5.5M respectively. Written reviews are what separate them: 69% of ClassDojo's written reviews are positive against 65% of Duolingo's.

UpkeepUpdate frequency

ClassDojo ships an update every 2 days, Duolingo weekly. Both last shipped on September 24, 2026.

Scorecard3 real differences · 8 level
ClassDojo versus Duolingo: the parameters behind the verdict, then further details
ParameterClassDojoDuolingo
PriceFreeFree
Rating4.8 (4.1M ratings) — better4.7 (5.5M ratings)
Positive reviews68.8% of reviews — better64.6% of reviews
Number of ratings4.1M5.5M — better
Update frequencyEvery 2 days — betterWeekly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#4#1 — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size205 MB489 MB
Age rating4+4+
DeveloperClassDojo, Inc.Duolingo

Customer experience

ClassDojo

All ratings4,073,016 ratings
Positive96.6%
Neutral1.6%
Negative1.8%
Written reviews4,068 reviews
Positive68.8%
Neutral7.6%
Negative23.6%

Duolingo

All ratings5,464,639 ratings
Positive94.2%
Neutral2.4%
Negative3.4%
Written reviews29,453 reviews
Positive64.6%
Neutral9.6%
Negative25.7%

User reviews

ClassDojo

From 4.1M App Store ratings

What we love

  • 🚀 Great communication tool
  • 👍 Useful for behavior management
  • 💡 Allows sharing of student work and progress
  • 👍 Facilitates parent-teacher interaction
  • 👍 Customizable point system

Room to improve

  • 🐛 Notification issues
  • 🔒 Privacy concerns with sharing student information
  • 💰 Paid features are required for full functionality
  • 🤔 Cluttered interface with too many irrelevant posts
  • 🤔 Difficult to navigate and find specific information

Duolingo

From 5.5M App Store ratings

What 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

Bugs and requests

ClassDojo

Reported bugs

3 issues
  • Inconsistent notification delivery
  • Progress data disappearing or resetting
  • Difficulties with uploading and sharing content

Requested features

5 requests
  • Ability to download student photos and work
  • Option to filter and unfollow posts not relevant to a student
  • Improved search and organization of posts
  • Scheduling feature for posting class updates
  • Ability to send group messages to other parents

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

In-app purchases

17 purchases

ClassDojo

Subscriptions17
  • ClassDojo Plus Basic7 Days trial$6.991 Month
  • ClassDojo Plus Basic7 Days trial$7.991 Month
  • ClassDojo Plus Basic$7.991 Month
Show 14 more
  • ClassDojo Plus7 Days trial$8.991 Month
  • ClassDojo Plus Basic7 Days trial$8.991 Month
  • Dojo Sparks7 Days trial$9.991 Month
  • ClassDojo Plus Basic7 Days trial2 variants$9.991 Month
  • ClassDojo Plus Basic$9.991 Month
  • ClassDojo Plus Basic7 Days trial$10.991 Month
  • ClassDojo Plus7 Days trial2 variants$39.996 Months
  • ClassDojo Plus Basic7 Days trial$39.991 Year
  • ClassDojo Plus Basic7 Days trial$59.991 Year
  • Dojo Sparks7 Days trial$64.991 Year
  • ClassDojo Plus Basic7 Days trial2 variants$69.991 Year
  • ClassDojo Plus7 Days trial$79.991 Year
  • ClassDojo Learning Bundle7 Days trial$99.991 Year
  • ClassDojo Plus Basic$299.991 Year
16 purchases

Duolingo

Subscriptions10
  • Super Duolingo7 Days trial$9.991 Month
  • Super Duolingo7 Days trial$12.991 Month
  • Super Duolingo14 Days trial$12.991 Month
Show 7 more
  • 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
One-time6
  • Chest of Gems$0.99
  • Barrel of Gems (1200)$4.99
  • Chest of Gems (1200)$4.99
Show 3 more
  • Cart of Gems (3000)$9.99
  • Barrel of Gems (3000)$9.99
  • Cart of Gems (6500)$19.99

Questions

Is ClassDojo free?
ClassDojo is free to download, with in-app purchases available.
Is Duolingo free?
Duolingo is free to download, with in-app purchases available.
Which has better reviews, ClassDojo or Duolingo?
ClassDojo is rated higher. ClassDojo averages 4.8 out of 5 from 4.1M ratings, while Duolingo averages 4.7 from 5.5M ratings.
Do ClassDojo or Duolingo have ads?
Duolingo shows ads; ClassDojo does not.
Which is updated more often, ClassDojo or Duolingo?
ClassDojo ships an update every 2 days, and Duolingo weekly. Most recently, ClassDojo was updated on September 24, 2026 and Duolingo on September 24, 2026.
Which is more popular, ClassDojo or Duolingo?
ClassDojo currently peaks at #4 in the App Store charts, and Duolingo at #1. Chart position reflects recent download velocity rather than total install base.

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