Preply English Tutoring vs Duolingo English Test

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.

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.

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.

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.

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.

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.

Adaptive difficulty and integrated skill design are genuine strengths. Weakened by the absence of a formal essay (only a 5-minute writing sample), opinion-based speaking prompts, and a perceived lack of academic rigour versus IELTS and TOEFL among experienced practitioners.

No published answer keys, rubrics, or section-level guidance — the weakest methodology dimension. Some test-takers receive a score range spanning three CEFR levels rather than a single number, making preparation harder than for IELTS or TOEFL.

$65 per attempt with unlimited free score sends versus $220-plus for IELTS. 48-hour results and no test-centre booking add further convenience. The primary reason test-takers choose the DET over alternatives.

At-home, on-demand testing removes scheduling friction and supports repeated attempts. Three-tier human review provides oversight. Weakened by documented AI false-flag incidents and a 72-hour appeal window that can frustrate test-takers.

6,000-plus programs in 110-plus countries accept it, including 98 of the US News Top 100 universities and all Ivy League schools. IELTS is accepted by 12,500-plus organisations — more than double. UK/Australian visa routes and professional bodies don't yet accept at-home tests.