Codex4 vs Viobean

Get fluent faster by learning the words you actually use. Codex4 helps you build a usable vocabulary and keep it for the long term. - Learn what you need: Add your own words from any text in one tap. Build vocabulary for your job, studies, or hobbies. - Retain more with less effort: Reviews are timed by FSRS (a modern spaced-repetition model) so you study exactly when it counts. - Master real usage: The app treats each word as a lemma, so forms and conjugations are covered naturally as you progress. - Stay organized and motivated: Clear stats show what’s due, what’s known, and what’s next. - Bring any content: Automatic word extraction and a context-aware lemmatizer handle homonyms and multi-word phrases. - Your data stays yours: Keep access to review even after unsubscribing, and export your words and learning data anytime. - No gimmicks: Fast sessions, clean design, built for serious learners. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Prepare for the telc A1, A2, B1 & B2 Deutsch Zertifikat — not random practice. Viobean is AI-powered exam prep built around the telc exam format. Every task, every scoring dimension, every exam section mirrors what you'll actually face on exam day. All four skills — plus Sprachbausteine — in authentic exam structure. telc A1, A2, B1 & B2 EXAM FORMAT Every Modelltest, every Übungstest, every Prüfungstraining session follows the real exam: • Leseverstehen — exam-authentic reading passages • Hörverstehen — listening at exam tempo • Sprachbausteine — the grammar section telc actually tests • Schriftlicher Ausdruck — written tasks with AI evaluation • Mündliche Prüfung — all three Teile (Teil 1, 2, 3) with a conversational AI partner AI EXPLAINS WHY — IN YOUR LANGUAGE Every answer comes with a detailed grammar explanation, not just "right" or "wrong." Our AI teaches you the rule behind the answer so the next similar question gets easier. Available in 24 languages — read explanations in your native tongue while you practice in German. AI WRITING EVALUATION Submit your letters and essays and get structured feedback in seconds: grammar, vocabulary range, register, coherence, task fulfillment — the same dimensions a human rater scores. Rewrite, resubmit, watch your scores improve. AI SPEAKING — REAL-TIME CONVERSATION Have an actual German conversation with an AI partner that plays the examiner role: • Teil 1 — introduce yourself and answer follow-ups • Teil 2 — discuss a topic with a partner • Teil 3 — plan something together You get transcripts, turn-by-turn feedback on pronunciation, grammar, fluency, and task completion. No tutor scheduling, no exam-day nerves — practice until you're ready. EXAMS SUPPORTED • telc A1 — fully supported • telc A2 — fully supported • telc B1 — fully supported • telc B2 — fully supported • More exams coming soon WHY PEOPLE USE VIOBEAN • telc B1 for Einbürgerung, Niederlassungserlaubnis, or Sprachnachweis • telc B2 for university admission or professional qualification • Integrationskurs students adding practice outside class • Self-learners doing Prüfungsvorbereitung without a tutor • Returning learners brushing up before exam day TRACK YOUR PROGRESS Practice history, past recordings, written submissions, and per-section scores all stay with you. See what's improved, identify weak spots, go into the exam knowing where you stand. PRIVACY Your voice recordings and written answers are evaluated by AI — never used to train AI models. Delete your account and all associated data from inside the app any time. MADE IN BERLIN Built by a small Berlin-based team working with a German language expert advisor. Every task mirrors the telc exam format; every AI explanation and evaluation is grounded in the grammar and scoring dimensions an examiner cares about. Email support@viobean.com any time — we reply within two business days. Terms of Use: https://viobean.com/terms Privacy Policy: https://viobean.com/privacy