Real LEK questions in English. And how others answered them.
Every question from the 12 Polish Final Medical Examination sessions of 2021–2026, published by CEM. For each one you see how many candidates chose each answer – and where most of them fell into a trap.
Free, no account, no card: 20 questions and 1 exam a day. App Store coming soon.
Swimming in open natural water bodies (stagnant water) is associated with a risk of:
Pick an answer to see what candidates chose.
Source: Medical Examinations Centre (CEM, cem.edu.pl), LEK autumn 2024, obtained 04.11.2026. Statistics from the Polish-language session.
12 LEK sessions in English, spring 2021 to autumn 2026
Every question from these sessions, with the correct answers and candidate statistics. Take any session as a full exam. Older sessions are in the app in Polish.
What the app can do
Everything you need for the LEK in one app – from your first question to a full mock exam.
Real CEM sessionsPremium
Take the LEK from a chosen session exactly as it was: questions in their original order and 240 minutes for 200 questions.
- See which sessions you have passed and your best score in each.
- The app suggests the next session – newest first.
- Questions shared with other sessions count towards your progress straight away.
An exam like the real LEK
Full LEK, mini exam, single-field exam or your own set – with a countdown and a question map.
- Flag questions to check and come back to them before you submit.
- Leave at any time – your answers are saved and the clock stops.
- Before submitting, see how many questions are still unanswered.
A result that tells you something
Right after the exam you know whether you passed the 56% threshold and by how much you missed it.
- Answer review question by question and the time for the whole exam.
- One button to repeat only the questions you got wrong.
- A chart of your recent exams with the pass line shows whether you are improving.
A question bank with filters
Search all questions by their text and answers, then narrow down to what you need.
- Filters: new, wrong, favourites, most frequent and hardest.
- Choose a session, year and field – across the 10 LEK fields.
- Each question shows how many sessions it appeared at and how you did on it.
Reviews where you go wrong
The app collects the questions that need more work and serves them in a separate review session.
- Wrong – the ones you last answered incorrectly.
- Hard – the ones you get right in fewer than half of your attempts.
- Favourites – starred while studying or in the bank.
Statistics and a daily habitFull in Premium
A daily goal, a study streak and a calendar show whether you study regularly. Statistics show what you still don't know.
- Accuracy in every field, strengths and weaknesses.
- Trend: the last 7 days compared with the 7 before.
- Questions covered: mastered, in progress and not yet started.
CEM's own EnglishThe text comes from CEM's official English versions. The few questions CEM has not published in English we translated ourselves; they are marked in the app.
Search for an explanationEvery question has a topic and a ready-made Google search. One tap instead of retyping the question. (Premium)
Question imagesX-rays, ECGs and other figures from CEM questions – tap to zoom.
Honest about currencyQuestions that CEM has marked as inconsistent with current knowledge carry a warning in the app.
Report a questionSpotted an error? The button under the question opens an e-mail with its number.
Offline and syncThe questions are on your phone. With a free account your progress moves to a tablet or a new phone.
Light and dark themeFor late-night reviews – or following your phone's settings.
No adsNo ads and no tracking. You only pay for Premium, if you want it.
How you study in the app
A little every day, and where you lose the most points.
Answer
Questions from a chosen session or field, the most frequent or the hardest. Offline too – on the tram or on call.
Compare
After you answer, see how candidates' choices were split. One tap gives you a ready-made search for an explanation.
Revisit mistakes
Wrong answers go to your reviews. Mark hard questions as favourites to come back to them.
Sit a mock LEK
200 questions in 4 hours, like the real exam – or a mini exam. Then your score, time and answer review.
Pay once. Nothing renews by itself.
You buy access for the period you choose. No subscription – nothing to remember to cancel.
Free
20 questions and 1 exam a day, forever
30 days
later PLN 49
90 days
later PLN 99
A full semester of study180 days
later PLN 159
Launch price – valid until 31 December 2026.
Premium: no daily limits, full LEK exams and CEM sessions, candidates' answer statistics, explanation search and full statistics. Gross prices in Google Play; the app shows prices in your currency.
Before you download
Which questions are in English?
The app follows your phone's language. In English you get every question from the 12 LEK sessions of 2021–2026 (over 1,600 questions). Older sessions (2013–2015) and the LEP archive are in Polish only – switch your phone to Polish to see all 2,768 LEK questions.
Is this an official CEM app?
No. LEK Study is not an app of the Medical Examinations Centre (CEM) and is not affiliated with it. We use questions published by CEM at cem.edu.pl under the terms of the CEM Director's offer, and every question shows its source and the date it was obtained.
Are the questions up to date?
The questions come from successive LEK sessions and from the CEM question bank. Questions that CEM has marked as inconsistent with current knowledge carry a warning in the app. As CEM states: the content of the questions may not reflect current medical knowledge and cannot be the basis for diagnostic or therapeutic decisions.
Do I need an account?
No. You can use the app as a guest – and even buy Premium. A free account is useful if you want your progress and Premium on several devices.
I changed my phone – how do I get Premium back?
Sign in to the same account, or choose "Restore purchases" on the Premium screen (works within the same Google account / Apple ID).
Does Premium renew automatically?
No. You buy access for the period you choose. Another purchase while Premium is active extends access from its end date.
Does the app work offline?
Yes. The questions are inside the app. Internet is needed only for account sync and purchases.
I found an error in a question. What should I do?
Under every question in the app there is a "Report question" button – it opens an e-mail with the question number. You can also write to [email protected].
About us
LEK Study is an app by Insoft Solutions Artur Lenart. It brings the LEK questions published by CEM together in one place and helps you work through them methodically, with mistake reviews, statistics and mock exams.
We take questions only from the Medical Examinations Centre (CEM) website and use them under the terms of the CEM Director's offer. Every question shows its source and the date it was obtained.
- No ads and no tracking.
- Pay once, no subscription and no automatic renewal.
- Reported errors in questions are fixed in the next app versions.
Have a question? Write to us.
We reply to every message, within 14 days at the latest.
Insoft Solutions Artur Lenart
Tax ID (NIP) 6612300015
The fastest way is the "Report question" button in the app – the e-mail already contains the question number.
Start with 20 questions a day. Free.
No account, no card. Add Premium whenever you like.
App Store – coming soon.