Last updated: October 2026
Short answer: If you need total control and custom decks, Anki is the industry standard. For a ready-to-use, structured experience with professional audio and exam-focused content, LexyBooster is the most efficient choice. If you are a complete beginner looking for a daily habit, Duolingo is the best starting point.
We compared five apps for learning German vocabulary—LexyBooster, Anki, Duolingo, Memrise, and Busuu—based on how they help memorize vocabulary, prepare for DTZ and telc B1 exams, and provide translations. This comparison is based on public information about features, pricing, and our personal experience as language learners.
| If you need... | Choose... |
|---|---|
| Daily habit building | Duolingo |
| Custom decks and flexibility | Anki |
| Ready-to-use B1 content | LexyBooster |
| Grammar-focused courses | Busuu |
| Speaking practice | Busuu |
We are the creators of LexyBooster, so this comparison is not neutral. We have included our own shortcomings below to keep it honest.
| App | Translations | Spaced Repetition | Audio | B1 Exam Prep | Free Tier | Premium Cost |
|---|---|---|---|---|---|---|
| LexyBooster | Yes | Yes, 7 steps | Yes | Yes, curated A1-B2 | Yes | Pro €69.99/year |
| Anki | Depends on deck | Yes, highly customizable | Depends on deck | No | Yes | Free (Desktop/Android), One-time purchase (iOS) |
| Duolingo | Yes | No | Yes | Basic only | Yes | Subscription based |
| Memrise | Yes | Yes | Yes | No | Limited | Subscription based |
| Busuu | Yes | Yes | Yes | Yes | Limited | Subscription based |
LexyBooster is a specialized service for German vocabulary that we are building ourselves. It is centered around a 7-step spaced repetition algorithm: every word correctly identified is pushed to a longer interval, while mistakes reset the word. This saves significant time compared to linear study and fits perfectly into 15-20 minute daily sessions.
LexyBooster differs from generic flashcard apps by offering pre-curated, structured content: 306 word and phrase pairs categorized by topics essential for DTZ and telc B1 exams—work, housing, authorities, healthcare, banking. Every entry is translated and includes professional audio. We also support an offline mode: you can study on the go, and progress syncs when you reconnect. The interface is localized in 18 languages.
LexyBooster includes a free tier with a limited set of decks. A Pro subscription removes limits and adds competitive features like duels, leagues, and achievements.
Strengths:
Weaknesses:
Best for: People already studying grammar who want a streamlined, effective vocabulary solution for exams or moving to Germany.
Not for: People looking for an all-in-one "zero to hero" language course.
Moving to Germany requires mastering specific vocabulary quickly to handle daily life, from Anmeldung to doctor visits. Unlike general language apps, an expat-focused tool must prioritize high-frequency survival terms over abstract grammar, ensuring you can communicate with authorities and colleagues from day one.
LexyBooster is uniquely suited for this, as it provides curated decks for essential life topics, professional audio for correct pronunciation, and an offline mode for study during commutes. While Anki offers flexibility, it lacks the structured, ready-to-use survival content that expats need immediately. Duolingo and Memrise focus more on general vocabulary and gamification, often missing the specific terminology required for German bureaucracy or medical appointments. For those preparing for integration, understanding how many words are needed for B1 is key, and our essential vocabulary lists help bridge that gap efficiently.
Anki is the gold standard for open-source flashcard apps. It is not a course provider but a powerful engine that allows you to import existing decks or create your own. It has been used for years by medical students and language learners alike.
The repetition algorithm is entirely customizable, allowing you to tweak intervals and penalties. This is a massive strength for power users but can be overwhelming for beginners. While many public German decks exist, quality varies wildly, and errors are common.
Anki is free on Desktop and Android, but the iOS version requires a one-time purchase.
Strengths:
Weaknesses:
Best for: Users who want full control and don't mind manual setup.
Not for: Users who want a plug-and-play solution.
Duolingo is the world's most famous language app, relying on gamification—streaks, XP, and leagues—to keep learners engaged. It covers basic German grammar and vocabulary up to A2 level through sentence translation.
Duolingo is unbeatable at building a daily habit. However, its spaced repetition system is tied to completing lessons rather than targeting individual words, meaning specific vocabulary is often forgotten faster than in dedicated SRS apps.
Duolingo offers a free ad-supported tier and a subscription ("Super") for offline access and unlimited hearts.
Strengths:
Weaknesses:
Best for: Absolute beginners struggling to stay motivated.
Not for: Serious preparation for specific proficiency exams.
Memrise focuses on video clips of native speakers, providing real-world context that helps with listening skills. Their content is centered around conversational phrases rather than systematic academic or exam-focused vocabulary.
While an SRS algorithm is present, it is less transparent and less configurable than Anki or LexyBooster. Their free tier is increasingly limited, with core features often locked behind a subscription.
Strengths:
Weaknesses:
Best for: Beginners wanting to familiarize themselves with spoken German.
Not for: Those focused on passing formal written exams.
Busuu is one of the few all-in-one services in this list. It offers a structured course from A1 to B2, covering both grammar and vocabulary. Most importantly, it includes speaking and writing tasks that are reviewed by native speakers in their community.
This human feedback is a standout feature. However, it is less flexible—you cannot easily import your own content or focus exclusively on specific exam topics.
Strengths:
Weaknesses:
Best for: Those seeking a structured course with a human element.
Not for: Those on a budget or looking for specialized tools.
Spaced repetition is a learning technique that incorporates increasing intervals of time between subsequent reviews of previously learned material. This method exploits the psychological spacing effect, which suggests that humans learn more effectively when they space their study sessions out over time rather than cramming information into a single session.
When you learn a new German word, your brain initially stores it in short-term memory. If you do not review it, the memory trace fades quickly. By reviewing the word just as you are about to forget it, you strengthen the neural connection, moving the information into long-term memory. Each successful recall extends the interval before the next review is required.
Modern applications use algorithms to calculate these optimal intervals. If you identify a word correctly, the app schedules the next review for a later date. If you struggle or make a mistake, the app resets the interval, ensuring you see the word more frequently until it is firmly mastered. This approach is significantly more efficient than linear study, as it allows you to focus your limited time on the words you are most likely to forget.