Duolingo: Language Lessons

by Duolingo

4.7 47M+ reviews
935M+ Installs
05/29/2013 Released
Duolingo: Language Lessons icon
Duolingo: Language Lessons icon
Education

Duolingo: Language Lessons

by Duolingo

4.7 47M+ reviews
935M+ Installs
05/29/2013 Released
Duolingo: Language Lessons screenshot 1
Duolingo: Language Lessons screenshot 2
Duolingo: Language Lessons screenshot 3
Duolingo: Language Lessons screenshot 4
Duolingo: Language Lessons screenshot 5
Duolingo: Language Lessons screenshot 6

Ratings Breakdown

4.7 ★★★★★ 47M+ ratings
5 83%
4 12%
3 2%
2 1%
1 2%

Data from Google Play at the time of writing.

What Duolingo Actually Offers

Duolingo is the massively popular app for learning languages through short, gamified lessons, and it has now expanded into Math, Music, and Chess courses. It’s aimed at casual learners who want a low-commitment way to build vocabulary and basic grammar in over 40 languages, rather than serious students who need deep, structured instruction. The bite-sized lesson format, streaks, and leaderboards are built around daily habit-forming, which is where the app has always found its niche.

For someone who wants to dabble in Spanish before a trip, or keep a language ‘warm’ with five minutes a day, the core idea still works. The chess and music additions are a genuinely different pitch than the language courses, positioning Duolingo as a broader ‘skills’ app rather than just a language tool, though the language courses remain the main draw for most users.

Where It Genuinely Delivers

Long-time users clearly get hooked on the format, with some reviewers reporting streaks over a thousand days, which says a lot about how effective the app is at keeping people coming back. The multiple exercise types, translating, listening, multiple choice, speaking, do a solid job of varying the practice so lessons don’t feel completely repetitive from one skill to the next. It’s also free to start in every language offered, with no cost barrier to trying it out, which is rare in language learning.

The gamification layer, leaderboards, achievements, and progress tracking, genuinely motivates a segment of users to practice daily, which is arguably the app’s biggest real-world strength: it gets people to open the app even on days they don’t feel like studying.

The Energy System Complaint That Won’t Go Away

The most consistent and heavily-voted complaint in reviews is the recent switch from a ‘hearts’ system to an ‘energy’ system. Multiple reviewers with years-long streaks describe running out of energy mid-lesson, sometimes on the very last question, and say they can now only complete around three lessons instead of the six to eight they used to manage on the free tier. Several reviewers explicitly call this a push toward the paid subscription, and it’s hard to argue otherwise when the free experience has been cut this noticeably.

On top of that, reviewers report losing features that used to help with actual comprehension. The removal of sentence discussion threads and in-app explanations for why an answer is wrong is cited repeatedly as a real loss, with users saying they’re now left guessing at grammar rules rather than understanding them. One reviewer with 250 days of use said the app doesn’t explain sentence construction or tenses well, just relies on repetition and guessing, and that pattern of complaint is echoed by others who’ve used it for years and feel the teaching quality has quietly declined as AI-driven content has increased.

The Free Trial Trap Worth Knowing About

Several reviews flag the free trial sign-up flow as deceptive, describing a ‘gift’ of free days that actually activates a trial, which then auto-converts to a paid subscription if not cancelled. This is worth knowing before you tap anything that looks like a free offer inside the app, since more than one reviewer called it predatory and said it caught them off guard.

Who Should Actually Download This

Duolingo is worth downloading if you want a free, low-stakes way to build basic vocabulary and habit-forming daily practice in a new language, or if you’re curious about the Chess or Music courses as a novelty. It’s not the right choice if you need deep grammatical understanding or in-depth error explanations, since multiple long-term users say that’s exactly what’s been stripped out recently. If you’re on the free tier, go in expecting the new energy system to limit how much you can practice per day, and be careful with any ‘free days’ prompts during sign-up. For casual, low-commitment learning it still has value; for serious language study, you’ll likely need to supplement it with other resources.

Pros

  • Free access to 40+ languages
  • Varied exercise types keep lessons fresh
  • Gamified streaks build daily habit
  • Leaderboards add motivating competition
  • New Chess and Music course options

Cons

  • Energy system limits free daily lessons
  • Removed explanations for wrong answers
  • Free trial sign-up flow feels deceptive

What Real Users Say

patty faber 4/5

“too much repetition of some easy things, then" you learned 25 new words today." not enough explanation for how to construct sentences and tenses, just a lot of guessing. I've been doing this for 250 days and it goes back to review simple words, but I feel like I'm missing so much understanding. I like the game format, but even…”

👍 8,361 found this helpful
C 1/5

“I have a 1,364-day streak. I just got switched from the heart to the energy system and it's awful: I can't even complete one "legendary" lesson without running out of energy, usually at the very last question (of course). Obviously a ploy to force learners to subscribe to the paid app. Every recent change has been for the worse (repetitive…”

👍 7,081 found this helpful
Juliette H 1/5

“The app has become worse as they rely on AI more, while at the same time reducing functionality for the free plans. It used to be I could find out WHY an error was wrong in app, but those days are long past, making it almost impossible to actually learn anything as opposed to just memorizing the response they want.…”

👍 7,044 found this helpful

Reviews sourced from Google Play, selected by helpfulness at the time of writing.

App Info & Permissions

Developer Duolingo
Content rating Everyone
Contains ads Yes
In-app purchases $0.99 - $239.99 per item
Installs 935M+
Released 05/29/2013
Price Free

Permissions this app requests

📅 Calendar Read calendar events plus confidential information; add or modify calendar events and send email to guests without owners' knowledge
👥 Contacts Find accounts on the device; read your contacts
🪪 Identity Find accounts on the device
🎙️ Microphone Record audio
🖼️ Photos/Media/Files Read the contents of your USB storage; modify or delete the contents of your USB storage
💾 Storage Read the contents of your USB storage; modify or delete the contents of your USB storage

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Frequently Asked Questions

1

What is Duolingo: Language Lessons?

Duolingo is a free education app for learning over 40 languages through short, game-like lessons covering speaking, reading, listening, and writing. It has also expanded to include Math, Music, and Chess courses. The app uses streaks, leaderboards, and achievements to encourage daily practice. It's designed for casual learners rather than those seeking intensive, classroom-level instruction.

2

Is Duolingo free to use?

Yes, every language course is free to start, and there's a paid Super Duolingo tier for extra perks like unlimited hearts and no ads. However, reviewers report that the free tier recently became more restrictive with a new energy system that limits how many lessons you can complete per day. Some also warn that free trial sign-up prompts can auto-convert into a paid subscription if you're not careful.

3

What is the new energy system reviewers are complaining about?

Duolingo replaced its old hearts system, where you lost a heart for wrong answers, with an energy system that several reviewers say runs out much faster. Multiple long-time users report only being able to finish about three lessons on the free tier compared to six to eight before, sometimes running out of energy on the final question of a lesson. Many see this as a deliberate push toward the paid subscription.

4

Does Duolingo explain grammar and mistakes well?

Reviewers who've used the app for years say this has gotten noticeably worse, with the removal of sentence discussion threads that used to help clarify mistakes. Several mention that wrong answers now come with little to no explanation, leaving learners to guess rather than understand grammar rules and sentence construction. This is cited as a significant drop in teaching quality by long-term users.

5

Who should download Duolingo?

Anyone wanting a free, casual way to build vocabulary and stick to a daily language habit will likely still find value in Duolingo. It's less suited to learners who need deep grammatical explanations or serious conversational fluency, since multiple reviews say those features have been reduced. Go in aware of the free tier's new energy limits and be cautious with any free trial prompts during sign-up.