Preply French Tutoring vs Duolingo German
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 French Tutoring
Duolingo · Languages
Duolingo German
Per-criterion
Preply is a marketplace, not a curriculum — "Preply doesn't use standardized curricula or textbooks", as one reviewer puts it, so content is whatever the tutor builds after your trial. For French specifically the platform layers on useful scaffolding: a placement test, a record-a-message-to-a-tutor feature, and a library of vocabulary exercises, tests and quizzes. The ceiling is high (DELF/DALF prep, pronunciation and gender-agreement drills, conversational fluency), but the floor depends entirely on directing your own sessions.
The French tutor pool is enormous and well-rated — beginner French tutors average 4.93/5 across 65,000+ verified reviews on Preply's own listing. A well-chosen native tutor giving real-time feedback on pronunciation and sentence structure is repeatedly named the platform's strongest feature. The catch is vetting: "the quality of lessons can vary widely because some tutors may not have formal teaching qualifications", so screening via trial lessons falls on the learner.
French lessons span roughly $5-40/hr (averaging $10-15), one of the cheaper ways to get genuine 1-on-1 speaking time. Value is dented by the commission and pricing structure: tutors are unpaid for the trial, Preply takes 100% commission on a new student's first lesson then 18-33% after, and several learners report prices "start to increase after a few sessions". Strong math for committed weekly learners; weaker for casual ones.
"Project" here means the lesson and learning experience itself. Learners consistently praise the personalised, goal-driven format and the convenience of jumping into a video call from a phone. The French placement test and practice tools give the experience more shape than a pure pay-as-you-go board. Friction comes from the classroom app — Reddit users in 2026 report chat glitches and limited mobile capabilities — and from booking rigidity.
This is Preply French's clearest strength. Live conversation with a native speaker, immediate correction of pronunciation, gender agreement and idiom, and lessons tailored to a job interview or travel goal translate directly into usable speaking ability. Preply's 2025 study claims learners taking 24+ lessons over 12 weeks progress 3x faster than typical timelines; even discounting the marketing, the speaking-first format is what self-study apps cannot replicate.
German is a well-developed Duolingo course with broad vocabulary and a full tree, but it is also where the platform's structural weakness shows most. German layers four cases, three genders, adjective endings and verb-final word order — and Duolingo introduces these by exposure rather than explanation. Reviewers consistently describe reaching the end of the tree with vocabulary but no working model of why "dem Mann" is correct.
No live teacher — the method is gamified implicit learning. For German this is a harder fit than for Spanish or French: the case and gender system genuinely needs rules to be stated, and the inductive approach leaves many learners guessing. The audio, characters and exercise variety are polished, but the method rewards recognition over the production German grammar demands.
The free tier is genuinely the best zero-cost on-ramp to German available — the full tree, native audio and the streak system at no cost. Duolingo Super (roughly $7-13/month) removes ads and adds unlimited hearts and practice modes, but reviewers broadly agree it does not fix the grammar or speaking gaps. The value sits in the free product; Super is a comfort upgrade, not a different course.
The streak engine, XP leagues and reminders are the most effective habit-formation system in language learning. Reviewers report 600-day and 2,500-day German streaks. The flip side is sharply visible for German: the streak keeps people opening the app for years without the conversational progress they assume it is producing, which several reviewers describe with real frustration.
Duolingo support is email-led and slow, with community forums as the primary help channel. The German course has strong external community coverage (grammar wikis, forums) that partially compensates. Billing, streak-recovery and account issues are where support quality matters most and where complaints concentrate across the platform.
This is the course's weakest dimension and the most consistently criticised. Reviewers who completed the German tree — some multiple times — describe arriving in Germany at "tourist level" and unable to hold a conversation. The app builds recognition and reading; it does not build the spontaneous production, real-speed listening, or case-correct speech that actual German conversation requires.
Scoring methodology applies identically to every course on the site — see the formula.