CourseVerdict

Preply English Tutoring 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 English Tutoring

4.0/ 5 · 31 opinions
21 positive6 neutral4 negative/ 31 total

Duolingo · Languages

Duolingo Max

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

Per-criterion

Content quality3.8 / 5

Preply has no curriculum of its own — content quality is whatever the English tutor brings to each session. Many tutors build a tailored lesson plan after the trial around a learner's target (IELTS, business English, conversation, accent work), which gives Preply slightly more structure than a pure pay-as-you-go board. The ceiling is high, but the floor depends on careful tutor selection, and reviewers note there is no built-in tool to check your level of English between lessons.

Instructor / method4.0 / 5

The English pool is enormous — over 40,000 tutors spanning certified teachers and native community tutors from the US, UK, South Africa and beyond. A well-chosen tutor is repeatedly named the single highest-leverage decision. The catch is vetting: anyone can sign up to teach, Preply does not control what or how tutors teach, and reviewers flag some profiles claiming native-speaker status who clearly are not, so screening via the trial lesson falls on the learner.

Value for money3.9 / 5

English is one of Preply's deepest and cheapest markets — classes start around $2 and native US/UK tutors typically sit in the $20-30/hour range. Value is dented by the package model: lessons are bought as subscription credits up front rather than one at a time, and unused credits do not always carry over. For committed weekly learners the per-lesson math is strong; for casual or irregular learners the credit model creates friction.

Retention & motivation4.0 / 5

The subscription/weekly-credit model is the most polarising feature, and it cuts both ways on retention. Learners who pre-commit to a recurring slot describe it as the most durable English habit they built — committing to a schedule means flaking less, and the easy booking flow curbs procrastination. Learners with busy, rotating schedules find the same model strict, and several flagged auto-renewal and expiring credits as a drag. Net positive for habit formation, friction for irregular schedules.

Support3.6 / 5

Scheduling, messaging and tutor-matching are reported as smooth, and the free-trial-replacement flow (a second trial with a different tutor if the first disappoints) is praised. The weak spot is billing and cancellation: the cancellation window is strict, and a recurring complaint across user reviews is being charged after cancelling or struggling to stop the subscription. This is the most-cited support frustration.

Real-world fluency4.4 / 5

The clearest strength. Regular 1-on-1 conversation with a native or near-native English speaker is the most direct route from app-bound recognition to real speaking, and learners describe sessions cementing pronunciation, fluency and confidence they could not build alone. The format exposes gaps — speaking at speed, listening to a real accent, handling interview or IELTS-style prompts — that apps never surface, and tutors adapt vocabulary to each learner's actual goals.

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.