Duolingo

Learn languages for free in bite-sized lessons.

Freemium

Duolingo Overview

What is Duolingo?

Duolingo is a language learning tool that offers courses in over 30 different languages. The courses are designed to be fun and effective with bite-sized lessons based on science. The tool offers personalized learning based on the user's level and pace using a blend of AI and language science. The courses provide reading, listening and speaking skills to ensure a comprehensive learning experience. The tool is free to use, with an option to remove ads and support education through the Super Duolingo version. The tool offers game-like features, challenges and reminders to help the user stay motivated and form a habit of language learning. Duolingo is available on mobile and web platforms and offers a convenient and flexible way to learn a language anywhere, anytime. The tool also offers free teacher tools to help students learn languages through the Duolingo app in and out of the classroom. Duolingo also offers an English test, which is fast, affordable and accepted globally, using AI and the latest assessment science. Help other people by letting them know if this AI was useful. Add your own prompts and outputs to help others understand how to use this AI.

Screenshot gallery

Pros & Cons

Pros

30+ languages offered
Science-based lessons
Personalized learning experiences
Reading, listening, speaking skills
Free to use
Ad-free with Super Duolingo
Game-like learning features
Motivational challenges
Flexible learning (anytime, anywhere)
Available on mobile and web
Free teacher tools
Supports in-class and out-of-class learning
Inclusive of English test
Fast, affordable, globally accepted test
Lessons in bite-sized chunks
Proven effective and efficient courses
Tailored lessons based on pace
Fun, engaging exercises
Supports habit formation
Engaging learning mascot
Highly rated mobile apps
Convenient, fast English testing
Super Duolingo for enhanced learning
Structured levels of learning
Globally accessible and accepted
Duolingo for Schools program
Real-world communication skills development
Attractive visual learning interface
Applicable for different learning scenarios
Regular reminders for learning progress
Playful character integration for engagement
Research-backed teaching approach
Productive learning during breaks/commutes
Regular updates on learning progress
Effective for beginners and advanced learners
Duolingo brand trust and recognition
Language lessons made entertaining
Strong community of learners
Easy to track learning progress
Cross-platform synchronization
Regular updates and improvements

Cons

Limited advanced lessons
No human interaction
Lacks cultural context
Lacks offline mode
Limited feedback
Ads in free version
Limited language options
Limited speaking practice
Super Duolingo costs

A Professional Framework to Evaluate Duolingo

When considering Duolingo for integration into your organizational workflow, we recommend deploying a structured score card across three critical operational pillars: Security & Compliance, Integration Friction, and long-term Price Scalability. Rather than looking only at basic feature lists, modern procurement teams must assess how a software platform behaves under high load and how well it fits into the team's data security guidelines.

1. Security and Database Compliance

Depending on your operating region and field, ensure that Duolingo supports standard security layers such as SOC 2 Type II certifications, GDPR compliance, or HIPAA-compliant database encryption. If the tool connects directly to client database tables or handles user passwords, verify that they implement multi-factor authentication (MFA), single sign-on (SSO) integrations, and end-to-end data encryption in transit and at rest.

2. API Coverage and Custom Integrations

Siloed data is the primary cause of operational friction. Evaluate if Duolingo has native connectors for your current project trackers, messaging hubs, and customer communication channels. For custom developer requirements, check if they provide a fully documented REST API with reasonable rate limits, comprehensive Webhooks support, and robust SDK packages in your language. A flexible API layer saves hundreds of hours of manual copy-paste overhead.

3. Total Cost of Ownership (TCO)

SaaS pricing packages are often deceptively simple. When reviewing Duolingo's billing structure, map out your team's projected expansion over the next 12 to 24 months. Determine how costs scale as your customer database increases or as you add team members. Factor in setup costs, mandatory support plan upgrades, API access fees, and storage overage rates to understand the true cost before committing to a contract.

By combining verified user reviews from our directory with internal workflow pilot tests, your procurement team can make an informed decision that drives productivity without creating capital waste.

Features of Duolingo

Language Learning
Personalized Lessons
Science Based
Language Skills
Interactive Education
Language Proficiency
Free + From $6.59/Mo

SaaS1to10 verified reviews for Duolingo

Overall rating

4.9

Based on 24 reviews

5.03 weeks ago

“Review”

Unfortunately it only teaches LAtin American Spanish not Castillian Spanish as spoken in Spain

Adrian Harvey

5.03 weeks ago

“Review”

easy to pick up and you get a few free file imports. it gives you results pretty fast, unfortunately i can't find a way to get back to these, they're locked behind the paid service.

Ron Jayson

5.03 weeks ago

“Review”

An amazing app, I love the share feature and the comment section summaries

Silvia Cho

5.03 weeks ago

“Review”

I'm still testing the tool yet it looks very promising. I tested it with a 5.5k words Academic text that I had previously red. I tested the Key points feature, it does work!

Ivana González

5.03 weeks ago

“Review”

I have used @Praktika and I have loved this app

Prof. Dr. Cristiano Torres

5.03 weeks ago

“Review”

Useful tool which I’ve enjoyed but it doesn’t notify you of free trial expiring like it said it would, so it just took my money 😅 but I’ll continue using it and see if my languages improve.

Lindie Botes

5.03 weeks ago

“Review”

I tried using it but the website has too many bugs.

João Neiva

5.03 weeks ago

“Review”

After my first use, I think it's surprisingly good. The only drawback so far is the PDF export option for the report which is formatless.

Alejandro Correa

5.03 weeks ago

“Review”

How can you teach English

karim alizade

5.03 weeks ago

“Review”

Suppppeeeeerrr! Wowwww! @Mindsmith is absolutely fantastic! It is incredibly useful, easy to use, and very professional.

Claudia Scilletta

5.03 weeks ago

“Review”

The website is pretty good but there are only a limited number of responses

Probal Roy

5.03 weeks ago

“Review”

not free. supports only few languages.

Kalyan Vetsa

5.03 weeks ago

“Review”

O GPT faz uma análise melhor e mais personalizada.

Vinicius Vilela

5.03 weeks ago

“Review”

I like the interface and all the variety of activities but I’ve found the leveling system to be rather inaccurate. I’m in advanced speaker of Korean, and after doing the level test and manually adjusting my level, I still receive activities related to beginner Korean grammar. Overall, I think it’s a great idea, but it might still need some tweaking regarding levels.

Lindie Botes

5.03 weeks ago

“Review”

Really amazing! Makes learning content and engaging with things so much easier!

Jamie McDonald

5.03 weeks ago

“Review”

As the service was in beta-testing stage, I created there a dozen of AI-generated courses for free. I wanted to use them. Those courses remained in my account as they started subscription tiers. But recently I have found out that they were deleted. The support didn't answer to my e-mail at all.

Oldfag TV

5.03 weeks ago

“Review”

Learning language and getting knowledge upgrade at the same time. Hope it will include more chat features and options in future.

Adrian Hallik

5.03 weeks ago

“Review”

Our aim is for everyone to easily master at least one foreign language. We created @SpeakPal with artificial intelligence and AI teachers to lower the barriers and costs of learning foreign languages for users around the world.

SpeakPal

5.03 weeks ago

“Review”

The app looks interesting, but it's not free. The free version is very limited, and the premium version seems expensive, although it may be worth it.

Eduardo Savino

5.03 weeks ago

“Review”

I tried a chat section. It's pretty cool, I used another company that's very similar to yours but it didn't recognize speech nearly as well as yours does. The only negative feedback I have for you is the web app seems a little bit buggy on my phone sometimes when you click to hold down for speech it doesn't work very well you have to try it a couple times. I like it though I'm going to try it again.

Igor Durov

5.03 weeks ago

“Review”

This is hands-down the most engaging language app I’ve ever used. The AI conversations feel real, and the talking avatar makes it fun to practice speaking without anxiety.

g k

4.01 months ago

“Review”

I've been learning German on Duolingo for a while, and it’s been pretty good for me. But when I try to practice a language I’ve learned before (like Japanese), the exercises feel too basic to really help me improve (even I’m still far from mastering it). SO I wouldn’t say it’s best way to learn a foreign language, the sentences/vocabulary taught are NOT enough when it comes to real-world situations. But still a great beginner tool to foster interest in learning another language.

Rachel Chan

4.01 months ago

“Review”

I'm a strong supporter and a long-term user, forever in love with the brand, the mascot and the playful and hilarious tone of voice. I've been enjoying Duolingo's French course for about a year now and while I would (and have) highly recommend it, I've seen some drastic changes which pushed me away as a premium subscriber. I.g. I'm really missing audio lessons with Paul and Estel, and the learning "tree" instead of "path" which it used to be. I'm still a user, though, and I'm still very excited about the product and the people behind it!

Oksana Polo

4.01 months ago

“Review”

I use Duolingo every morning to practice Spanish, and it’s become a valuable part of my daily routine. The bite-sized lessons make it easy to stay consistent, even on busy days. I’ve noticed real progress in my vocabulary, reading skills, and listening comprehension since I started using it regularly. The gamified features, like streaks and XP points, keep me motivated without feeling too pushy. Occasionally, I find the repetition a bit much, and some grammar explanations could be clearer, but overall it’s an effective and enjoyable tool. It has made language learning feel manageable and even fun

Emily