New: two daily games. Word Puzzle: guess the noun, then der, die or das. Word Groups: find four groups of four and learn every article.
Master German Grammar through Practice!
Struggling with German grammar mechanics? From Der, Die, Das and Cases to Prepositions, Possessives and Verbs, KasusKnacker is your dedicated training ground for mastering the hardest parts of the German language.
We focus on deliberate practice: targeted exercises with instant feedback and clear explanations that build your grammatical intuition and muscle memory.
Why KasusKnacker?
- 100% Ad-Free: Enjoy a distraction-free learning environment.
- Fair Freemium: Practice daily for free or upgrade for unlimited access.
- Exam Training: Grammar tracks from A1 to C1 with telc-style gap texts, word-bank tasks, error spotting and sentence rewrites. A timed readiness test shows which topics still need work. Useful when you're preparing for Goethe-Zertifikat, telc, DTZ or TestDaF.
- Schreibcheck & Schreibtraining: Paste your own German text and get corrections with an explanation for every edit. Then train on your own mistakes: repair your sentences and write a daily task matched to them.
- Targeted Case Training: Drill deep into dem, den, des, and der until it becomes second nature.
- Prepositions & Pronouns: Know exactly which case to use with every preposition.
- Possessives Mastery: Practice mein, dein, sein etc. across all cases.
- Verb Conjugator & Practice: Look up conjugations and practice verbs until they are automatic.
- Vocabulary Flashcards: Practice your German vocabulary with our new flashcard system.
- Phrases & Idioms: Learn common German phrases and idioms with flashcards.
- Article Mastery: Stop guessing genders. Practice Articles until they stick.
- Adjective Endings: Master the logic behind adjective declensions for every case.
- Phrasebook: 260+ real-life German phrases with audio across 15 everyday topics — doctor visits, banking, housing and more.
- Stories: Short, illustrated German stories with audio, dictation and comprehension questions — read and listen at your level.
- Dialogues: Everyday German conversations between two speakers — at the doctor, the bakery, the Bürgeramt, a job interview — with the text highlighted line by line as it plays, and comprehension questions afterwards.
- Placement Test: Not sure where to start? Answer a handful of questions and get a recommended level.
- Streak Freezes & Reminders: Miss a day without losing your streak, and get a daily practice reminder at a time you choose.
- Mini-Games: Hangman, Falling Words, Sentence Scramble and a grammar RPG battle.
- From A1 to C2: 20,000+ exercises in hundreds of themed lessons, from your first articles to advanced grammar.
- Gamified Progress: Earn XP, build daily streaks, and compete on leaderboards.
- Daily Challenge: Compete daily, keep your streak alive, and see how you stack up.
- Study Groups: Create private groups, share a join code, assign lessons, and compete on a shared weekly leaderboard. Only the creator needs Premium.
- Smart Review & Bookmarks: Save difficult exercises, revisit them later, and review mistakes when they are due.
Whether you're prepping for an exam or just want to speak without pausing to think about case endings or prepositions, KasusKnacker gives you the reps you need.
Download now and start cracking German grammar today!
KasusKnacker is an independent grammar-practice app. It is not an exam provider or testing centre, and it is not affiliated with, authorized by, sponsored by or endorsed by Goethe-Institut e.V., telc gGmbH, the Federal Office for Migration and Refugees (BAMF) or g.a.s.t. e.V. Goethe-Zertifikat, telc, Deutsch-Test für Zuwanderer (DTZ) and TestDaF are trademarks of their respective owners. KasusKnacker provides focused grammar review, not complete exam preparation.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
App reviews are not a thing i do but this one is worth it. This app fills a serious gap in budget German learning tools with real explanations and opportunities to drill a lot of the complicated concepts other apps skip past or can’t handle. This app is currently very reading-centered in its instruction and practice (vs speaking or listening like most other apps) which is especially helpful for academic learners looking to move quickly to advanced grammar while focusing tightly on reading skillsBut what inspired my review was the response to in-app feedback I submitted. I sent in some comments on some weak points on the flash cards. When I logged in a day or two later I had a message from the developer saying they were rolling out new features to address my concerns within the next one to two days! And those changes are already live with this version update. And demonstrating that responsiveness wasn’t a fluke, I found and reported a bug yesterday and had a new notification today with a personal thank you. Even for a new app this seems exceptional in my experience. I’m quite pleased at how handy the app is already and delighted to find a developer that’s so invested in the practical usefulness and usability of their product.
Developer Response
Thank you so much for taking the time to write this. Tt genuinely made my day! Hearing that the explanations and drills are helping you move toward advanced reading grammar is exactly what I hope KasusKnacker delivers. And I'm really glad the feedback loop has been working for you; your comments on the flashcards and that bug report directly helped make the app better, so thank you for that. Please keep the ideas and reports coming anytime at support@kasusknacker.com. Wishing you continued success with your German!
Practise your mistakes whenever you like – and start over if you want to.
- New: Extra round in the Review List – drill your mistakes as often as you want. A correct answer never pushes a card further out in your schedule; a wrong one sends it back to box 1.
- New: Reset everything – one place on your profile to reset lessons, the Review List (including every counter) and your statistics. XP, level and streak stay.
- New: Landscape layout – turn your iPhone sideways: exercises, games, flashcards and exam practice now fit the wide screen.
Also in this update:
- Exam practice tells you clearly when your daily limit is reached, instead of showing an error.
- The verb conjugator works again on older iPhones.
- Small fixes and improvements.
Thanks for learning with KasusKnacker!
Version 2.6.0
The developer, Toba UG (Haftungsbeschränkt), indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
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The following data may be collected and linked to your identity:
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The following data may be collected but it is not linked to your identity:
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Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
Dark Interface
Reduced Motion
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Information
Seller
Toba UG (haftungsbeschrankt)
Size
69.4 MB
Category
Education
Compatibility
Requires iOS 15.0 or later.
iPhone Requires iOS 15.0 or later.
iPad Requires iPadOS 15.0 or later.
iPod touch Requires iOS 15.0 or later.
Mac Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.