CourseVerdict

Preply Kids vs Duolingo Max

Same Bayesian formula, same rubric — so the difference in scores reflects the difference in the courses, not the difference in how we evaluated them.

Preply · Languages

Preply Kids

3.8/ 5 · 30 opinions
17 positive7 neutral6 negative/ 30 total

Duolingo · Languages

Duolingo Max

2.9/ 5 · 38 opinions
9 positive12 neutral17 negative/ 38 total

Per-criterion

Content quality3.7 / 5

There is no fixed curriculum — each tutor builds the lessons. For motivated kids with a strong tutor that means fully personalized, age-appropriate material (games, exam prep like DELF Junior). But it is a marketplace, so structure and quality vary from one tutor to the next.

Instructor / method4.2 / 5

The instructor is the whole product, and it is the strongest part. Kids tutors average 4.93/5 across nearly 194,000 reviews, and parents repeatedly praise patience, engagement, and the ability to keep young or shy learners involved. The flip side: you have to find the right one.

Value for money3.6 / 5

Lessons start around $3/hour and average roughly $14/hour — cheaper than most live kids tutoring. But the 28-day subscription model, lessons that expire if unused, and refund friction when a tutor is unavailable pull the perceived value down for some families.

Retention & motivation3.5 / 5

1-on-1 accountability and a tutor who feels like family keep many kids engaged far better than a self-study app. The risk is churn from tutor mismatch — a poor fit slows progress until you switch — and from rigid scheduling that punishes busy families who miss the 28-day window.

Real-world fluency4.0 / 5

Live speaking time with a real person is exactly what builds conversational confidence in children, and parents report measurable gains — improved school grades, passed junior exams, comfort speaking. This is the clear advantage of tutoring over app-only learning for kids.

Content quality3.0 / 5

Same Duolingo curriculum as Super with three AI bolt-ons — Explain My Answer, Roleplay, Video Call. AI explanations sometimes get grammar wrong and Roleplay topics are narrow, so the content lift over Super is real but modest.

Instructor / method3.1 / 5

The "instructor" is GPT-4 behind a Duolingo wrapper. It can explain basic grammar and hold a short roleplay, but multiple reviewers report it makes mistakes and is much narrower than ChatGPT/Claude direct, and far below an italki tutor on actual correction quality.

Value for money2.4 / 5

Roughly $30/month — more than 2× Super's $13. Reviewers flag that ChatGPT Plus/Claude Pro ($20) cover the AI capability with no topic limits, and a weekly italki lesson ($10-15) buys real human correction. Weakest dimension by a wide margin.

Retention & motivation3.4 / 5

Inherits Duolingo's streak engine, leaderboards and daily quests — the strongest retention layer in the category. Max-specific features add little; reviewers describe the AI call as a "try one free, then upgrade" upsell rather than a habit driver.

Real-world fluency2.8 / 5

Roleplay forces some output production, structurally better than Duolingo's tap-the-tile drill, but topic scope is narrow and it does not replicate real-conversation unpredictability. Better than Super at speaking, still well below a live tutor.

Scoring methodology applies identically to every course on the site — see the formula.