Learning Polish is hard without practice.
Learn new words, and stop guessing the endings so you sound like a pro. Fleksja teaches each word with all its forms, then makes you use the right one in real sentences until it comes out without thinking.
- Free flashcards
- Free sentence drills
- Spaced repetition
The rules make sense. Using them is the problem.
Cases aren't hard to understand. They're incredibly hard to actually use.
You can recite the table, but mid-sentence your brain goes blank and you pick an ending at random.
You read the definitions, close the book, and nothing sticks.
Reading grammar feels like progress. Without practice that makes you produce the form, it fades in a week.
Many apps focus on words, not on endings.
Vocabulary gets the attention. The endings, where Polish actually gets hard, are often left to guesswork.
Reading this table is easy. Saying kotem on the spot is not.
Every Polish noun, adjective and pronoun changes its ending depending on its job in the sentence. Fleksja trains exactly that moment: the sentence is in front of you, and you have to pick the form.
| MianownikNominative | kto? co? | kot |
| DopełniaczGenitive | kogo? czego? | kota |
| CelownikDative | komu? czemu? | kotu |
| BiernikAccusative | kogo? co? | kota |
| NarzędnikInstrumental | z kim? z czym? | kotem |
| MiejscownikLocative | o kim? o czym? | kocie |
| WołaczVocative | o! | kocie |
Three steps, a few minutes a day.
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Learn the word with all its forms
Every flashcard shows the word with all its case forms, plus aspect pairs for verbs. Free, from your first day at A0.
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Use it in a real sentence
A sentence with a gap and four real endings to choose from. The wrong options are the mistakes learners actually make. Free too.
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Miss it, see it again
Spaced repetition brings back the exact endings you got wrong, right before you'd forget them.
Flashcards and drills are free. Go further when you're ready.
Reserve a plan now, keep its launch price and get a 14-day free trial at launch. Nothing is charged today.
Learn words and practise the endings.
- 2 practice sessions a day: flashcards and drills
- Every word with all its forms
- Spaced repetition
- Light ads: a banner, and one after each session
- Watch a short video to unlock one more session
or €39.99 / year · save 44%
14-day free trialPractise as much as you want.
- Everything in Free
- Unlimited sessions, all 7 cases, singular and plural
- Verb conjugation drills
- A guided path from A0 to B2
- Progress stats and streaks
- Offline mode, ad-free
or €79.99 / year · save 44%
14-day free trialA coach that knows your weak spots.
- Everything in Plus
- AI coach that tracks your performance and adapts your training
- B1 and B2 exam prep with practice simulations
- Weekly progress report with your weakest endings
- Many more exercise types: mixed cases, adjective agreement, numerals, prepositions
- Your own decks: add words from your course
Fleksja is still being built. Reserving means we email you at launch, with your price locked in. Paid plans start with a 14-day free trial. No card, no payment today.
Before you sign up
Can I download the app today?
Not yet. Fleksja is in development for iOS and Android. Leave your email and you'll be among the first to get it.
Will you charge me if I reserve a plan?
No. We don't ask for a card and we don't take any payment until the app exists. Reserving tells us which plan you want, and we'll hold that price for you at launch.
How does the free trial work?
Plus and Premium start with 14 days free, so you can try everything before paying. Fleksja isn't launched yet, so for now you only reserve your spot and price. No card needed today.
Will it help me prepare for the B1 or B2 exam?
That's what Premium is for: exam prep for the Polish state certificate at B1 and B2, with practice simulations. Free and Plus cover the grammar and vocabulary foundations.
What level do I need?
Any level from A0 to B2. Beginners start with flashcards and the most common cases. If you already know the theory, you go straight to the drills.
How is this different from other language apps?
Most language apps are built around vocabulary and everyday phrases, and general flashcard tools leave you to build the cards yourself. Fleksja is built around one thing: producing the correct case ending in a sentence, with spaced repetition on the forms you miss.
Does it cover verbs too?
Yes. Flashcards include perfective and imperfective pairs, and Plus adds conjugation drills across tenses.
Get the ending right the first time.
Free flashcards and drills at launch. One email when the app is ready, nothing else.