Struggling with Der, Die, Das? KasusKnacker helps you practice German cases, articles, prepositions, verbs, and vocabulary with targeted drills and flashcards. Stop guessing, start training.
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Core German practice categories
Learn German phrases and idioms with flashcards
Master German grammar in mini-games
Build German word-order reflexes
Everything you need to practice German grammar fast.
Practice German without distractions. We respect your focus.
Drill Nominative, Accusative, Dative, and Genitive until der/die/das and dem/den feel automatic.
Learn German words, phrases, and idioms with quick flashcards and smart review.
Earn XP, build daily streaks, and compete on leaderboards to stay motivated.
The app tracks your mistakes so you can practice German where you need it most.
Practice daily for free or upgrade for unlimited access. No tricks.
Perfect for A1 to C2 learners who want to practice German step by step.
Learn with fast drills and mini-games that turn German practice into a habit.
Use KasusKnacker on web, iOS, and Android so you can practice German anywhere.
Nine core German practice areas with focused exercises, games, and flashcards. No lengthy explanations—just pure practice to build muscle memory.
Nominativ, Akkusativ, Dativ, Genitiv—fill in the correct article endings in context sentences until it becomes automatic.
Build reflexes for noun genders through repetition. Stop guessing and start knowing which article belongs to which noun.
Drill regular and irregular verbs across tenses. Present, past, perfect—practice until you conjugate without thinking.
Master which preposition takes which case. Akkusativ, Dativ, or Wechselpräpositionen—train the combinations that trip you up.
Personal, reflexive, and relative pronouns in all cases. Practice until "mir/mich" and "ihm/ihn" feel natural.
Mein, dein, sein, ihr—train possessive article declension across all cases and genders.
Build German vocabulary with fast flashcards and smart review.
Learn Redewendungen and common German phrases with grammar notes and examples.
Play short German grammar games that reinforce rules through repetition.
KasusKnacker is for anyone who knows the German grammar rules but struggles to apply them when speaking. If you think "Is it DEN or DEM?" mid-sentence, this app helps you practice German until it feels natural.
Students preparing for Goethe, TestDaF, or telc exams who need quick grammar drills.
Living in Germany and want fluent grammar without taking another course.
Self-learners stuck at B1/B2 who understand grammar but can't apply it fast enough.
Anyone who learned the rules but needs practice to make them stick.
Yes! Practice 50 exercises per day for free, forever. No ads, no tricks, no time limits on how long you can use the free version. Premium unlocks unlimited daily exercises for those who want more intensive training.
Duolingo teaches vocabulary and grammar concepts from scratch. KasusKnacker is pure training—you already know the rules, now drill them until they're automatic. Think of it as the gym for your German grammar muscles.
Core categories: cases (Nominativ, Akkusativ, Dativ, Genitiv), noun genders (der/die/das), verb conjugation, prepositions with their cases, pronouns, and possessive articles. Each has exercises and games.
Exercises range from A1 (beginner) to C2 (mastery). You can filter by level to match your current ability, or mix levels for comprehensive practice.
Both! Besides traditional fill-in-the-blank exercises, KasusKnacker includes fun mini-games to make grammar practice more engaging and enjoyable.
No, never. KasusKnacker is 100% ad-free. We believe ads disrupt learning, so we chose a freemium model instead. Free users get 50 exercises daily, premium users get unlimited access.
Yes. Alongside grammar drills, you can practice German vocabulary, phrases, and idioms with flashcards and smart review.
Yes. KasusKnacker is available on the web, iOS, and Android, so you can practice German anywhere.
Join thousands of learners who practice German grammar with KasusKnacker.