Duolingo vs Preply 2026: Free App or Live Tutoring?
Two completely different approaches to learning English. Duolingo is free, gamified and fun. Preply connects you with real tutors for personalised lessons. Which one should you choose? Let us break it down.
Duolingo
Best for daily vocabulary building
Free app with bite-sized lessons, streaks and rewards. Great for beginners who want a structured, no-pressure start to English.
Preply
Best for real speaking practice
1-on-1 tutoring with thousands of qualified teachers. Best for learners who want personalised feedback and conversation practice.
Duolingo vs Preply: Quick Comparison
| Feature | Duolingo | Preply |
|---|---|---|
| Price | Free (or $7/mo Super) | $5 - $80 per hour |
| Teaching Style | Gamified self-study app | 1-on-1 live tutoring |
| Best For | Beginners, vocabulary, daily habit | Speaking, grammar help, exam prep |
| Human Teachers | None | Thousands of tutors worldwide |
| Lesson Length | 5-15 minutes | 30-60 minutes |
| Speaking Practice | Limited (AI voice recognition) | Full conversation with a tutor |
| Grammar Lessons | Basic (implicit learning) | Customised by your tutor |
| Curriculum | Fixed, structured path | Fully customisable |
| CEFR Levels | A1 to B2 | A1 to C2 (all levels) |
| Schedule | Whenever you want (self-paced) | Book slots with your tutor |
| Trial | Free forever (with ads) | First lesson discount on many tutors |
| Platforms | iOS, Android, Web | iOS, Android, Web |
| Languages Offered | 40+ languages | 50+ languages |
Pricing: Free vs Pay-As-You-Go
This is where the two platforms differ the most. Duolingo is built around free access. Preply is a marketplace where you pay per lesson.
Duolingo Pricing
Duolingo is completely free to use. The free version includes ads and gives you five hearts (lives) that reset over time. If you make too many mistakes, you have to wait or practise to earn more hearts.
Super Duolingo costs about $7 per month (billed annually) or $13 for a monthly plan. It removes ads, gives unlimited hearts, and lets you review mistakes more easily. There is also a Max tier at around $14 per month that adds AI-powered explanations for your answers.
For most learners, the free version is enough. You can complete the entire English course without paying a cent. The paid plans mainly add convenience, not content.
Preply Pricing
Preply tutors set their own hourly rates. English tutors typically charge between $10 and $40 per hour. You can find some tutors for as little as $5 per hour, especially from countries with lower cost of living. Experienced, certified teachers often charge $25 to $60 per hour.
Preply adds a service fee of roughly 18% on top of the tutor's rate when you book. However, buying larger lesson packages reduces the per-lesson cost. There is no free trial on Preply, but many tutors offer a discounted first lesson.
If you take one lesson per week at $20 per hour, you will spend about $80 to $100 per month. That is significantly more than Duolingo, but you get real human interaction and personalised feedback.
Teaching Approach: Gamified App vs Human Tutoring
Duolingo uses a gamified, repetition-based method. You translate sentences, match words to pictures, fill in blanks, and speak into your microphone. The app uses a spaced repetition system to help you remember vocabulary. It is designed to build a daily habit, not to teach you fluency through conversation.
Preply puts you in control. You choose a tutor based on their profile, video intro, and reviews. Your tutor designs lessons around your goals. If you want to focus on business English, IELTS preparation, or conversation skills, you can find a specialist. The quality of teaching depends on the tutor you choose.
The key difference is feedback. Duolingo tells you if an answer is right or wrong, but it cannot explain why you made a mistake. A Preply tutor can correct your pronunciation, explain a grammar point on the spot, and adjust the lesson as you go.
Speaking Practice: AI Voice vs Real Conversation
Duolingo has speaking exercises where you repeat sentences into your microphone. The app uses AI to check if your pronunciation is close enough. This is useful for basic pronunciation practice, but it does not teach you how to hold a real conversation.
Preply is built entirely around conversation. Every lesson is a live video call with a tutor who speaks to you, listens to your responses, and helps you improve in real time. If you want to become fluent in spoken English, Preply is the better choice by far.
Curriculum and Structure
Duolingo follows a fixed path. You start at Unit 1 and work your way through themed units covering topics like family, food, travel, and work. Each unit introduces new vocabulary and grammar through contextual sentences. The course covers roughly A1 to B2 on the CEFR scale.
Preply has no fixed curriculum. Some tutors use textbooks and structured lesson plans, while others prefer free conversation. You can switch tutors at any time if you want a different approach. This flexibility is great for intermediate and advanced learners, but beginners may prefer the structure that Duolingo provides.
Certificates and Exam Preparation
Duolingo offers the Duolingo English Test (DET), an online English proficiency test accepted by thousands of universities worldwide. It costs $59 and can be taken from home. This is separate from the Duolingo learning app and is primarily used for university admissions.
Preply does not offer its own certification. However, many Preply tutors specialise in exam preparation for IELTS, TOEFL, Cambridge (FCE, CAE, CPE), and other recognised qualifications. If exam prep is your goal, you can find a tutor who has helped other students pass the same test.
Who Should Choose Each Platform?
Choose Duolingo if...
- You are a complete beginner and want a free, low-pressure start
- You can only spare 5-10 minutes per day for English practice
- You want to build vocabulary through daily repetition
- You are on a tight budget and cannot afford tutoring
- You need a structured curriculum that guides you step by step
Choose Preply if...
- You want to improve your speaking and listening through real conversation
- You need personalised feedback on your grammar and pronunciation
- You are preparing for an exam (IELTS, TOEFL, Cambridge)
- You are at an intermediate level and feel stuck with apps alone
- You want a tutor who can adapt lessons to your specific goals
Final Verdict
These two platforms are not direct competitors. They serve different needs at different stages of your learning journey.
The best approach is to use both. Start with Duolingo to build basic vocabulary and get comfortable with English. Once you know some words and phrases, supplement with weekly Preply lessons to practise speaking with a real person. Duolingo builds your foundation. Preply builds your fluency.
If you can only choose one: go with Duolingo if your budget is zero and you are just starting out. Go with Preply if you have some budget and you are serious about becoming conversational.
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Frequently Asked Questions
Which is better for beginners: Duolingo or Preply?
Duolingo is better for absolute beginners who want a free, structured introduction to English. Preply is better for learners who are ready to practise speaking with a real tutor.
Is Duolingo really free?
Yes, Duolingo is free with ads. You can upgrade to Super Duolingo for about $7 per month for an ad-free experience and unlimited mistakes, but the free version covers the full curriculum.
How much does Preply cost per hour?
Preply tutors set their own rates, typically between $5 and $80 per hour. English tutors average around $15 to $30 per hour. You can filter by budget when searching for a tutor.
Can I use Duolingo and Preply together?
Yes, this is actually the recommended approach. Use Duolingo daily for vocabulary and grammar practice, then take 1-2 Preply lessons per week to practise speaking with a real tutor.
Which platform has better teachers: Duolingo or Preply?
Duolingo does not have human teachers. It uses a gamified app with pre-recorded lessons. Preply connects you with thousands of human tutors who give personalised lessons and real-time feedback.
Can Preply help me prepare for IELTS or TOEFL?
Yes, Preply has tutors who specialise in exam preparation (IELTS, TOEFL, Cambridge exams). You can search for tutors with specific exam teaching experience. Duolingo has limited exam prep content.