Preply Spanish Tutoring vs Duolingo Japanese Course
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 Spanish Tutoring
Duolingo · Languages
Duolingo Japanese Course
Per-criterion
Like every marketplace, Preply has no curriculum of its own — content quality is whatever the tutor brings. Many Spanish tutors build a tailored lesson plan after the trial, and the platform nudges them to set goals and track progress, which gives Preply slightly more structure than a pure pay-as-you-go board. The ceiling is high (DELE prep, grammar plans, regional-dialect work), but the floor depends entirely on careful tutor selection and on the learner directing the sessions.
Preply's Spanish pool is enormous — over 13,000 tutors spanning certified teachers and native community tutors across Spain and Latin America. A well-chosen tutor is repeatedly named the single highest-leverage decision. The catch is vetting: reviewers note Preply does not control what or how tutors teach and not all tutors are certified, so the gap between an excellent teacher and a merely adequate one is real and falls on the learner to screen via trial lessons.
Spanish is one of Preply's deepest and cheapest markets — classes start around $3 and average roughly $15-16/hour, comparable to italki. Value is dented by two policies reviewers dislike: lessons are bought in packages (subscription credits) up front rather than one at a time, and tutors are not paid for the trial lesson. 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 Spanish habit they built — committing to a schedule means flaking less. 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, with real friction for irregular schedules.
Scheduling, messaging and tutor-matching are reported as smooth, and the trial-lesson flow 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 and the main reason this score sits below italki's.
The clearest strength. Regular 1-on-1 conversation with a native Spanish speaker is the most direct route from app-bound recognition to real speaking, and learners describe twice-weekly sessions cementing concepts they had struggled with and raising confidence sharply. The format exposes gaps (preterite at speed, ser/estar, subjunctive) that apps never surface, and tutors adapt vocabulary to each learner's actual goals.
Strong on the early basics — hiragana and katakana are introduced and reinforced well, and vocabulary exposure is broad. But reviewers repeatedly flag thin kanji coverage (no readings, radicals, or stroke order) and the absence of structured grammar, which matters far more for Japanese than for European languages.
There is no instructor. The method is implicit pattern-matching, and multiple reviewers say it "does not explain why sentences are structured the way they are." For a language whose grammar differs sharply from English, that hands-off approach is the app's biggest teaching weakness.
The core course is genuinely free, which is its strongest selling point — zero-cost exposure to kana and basic vocabulary. Super at ~$13/month only removes ads and adds hearts; reviewers agree it does not fix the structural gaps, so the value is in the free tier.
Gamification is the standout. Streaks, points, and reminders genuinely build a daily habit, and the spaced-repetition loop reinforces kana and vocab. The catch is the well-documented plateau around month 3-4, where recognition keeps improving but real ability stalls.
This is the weakest area. There is no genuine speaking or conversation practice — exercises ask you to repeat pre-written sentences — and reviewers agree the app cannot prepare you for real Japanese conversation. It is a supplement, not a path to fluency on its own.
Scoring methodology applies identically to every course on the site — see the formula.