KasusKnacker
An app for practicing the most common German grammar topics
KasusKnacker launched on February 4, 2026 with 3 votes, #3,486 of 16,627 launches that month and more than 50% of that year's launches.
What it does
KasusKnacker is a German practice app for people who already know the rules, but still hesitate mid-sentence (“den or dem?”). It focuses on deliberate practice: cases, articles, prepositions, conjugation, pronouns, plus flashcards for vocabulary and idioms. No long beginner lessons — just training. Available on Web, iOS and Android. Free to try. 100% ad-free. 50 free exercises daily.
Practice German grammar and vocabulary with cases, articles (der/die/das), verbs, prepositions, and flashcards. 50 free exercises daily. No ads.
You know the tables. You still freeze on dem or den halfway through a sentence. KasusKnacker drills cases, genders, prepositions and verbs inside real sentences: 50 free exercises a day, no ads. Pick a topic, then fill the gap in a real sentence. Get it wrong and the app files it for review later. Ten questions per lesson. No banners and no video breaks. Nothing interrupts a lesson. Drill Nominativ, Akkusativ, Dativ and Genitiv until dem and den stop being a guess. Flashcards for vocabulary and Redewendungen, nearly all with their own audio clip. XP and daily streaks, plus a leaderboard if you like comparing. Miss a day and a streak freeze covers you. Every wrong answer goes into a review…from kasusknacker.com
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