Other people's notes save you the first few hours. The exam you have to pass is still the one for your own module.
The week before exams looks similar for a lot of students: 300 slides, a half-read script and a tab with Studocu or Studydrive, where someone from last year uploaded "the perfect summary". That is tempting, and sometimes it is exactly right. Sometimes, though, the summary belongs to a different lecturer, an old syllabus or another university altogether.
This article looks at what shared notes are good for, where they fall short and how to combine them with your own material. acemate is itself the maker of a study app that works with your own files and offers no shared documents. We describe every platform from its public information, as of October 2026.
What Studocu, Studydrive and similar platforms do well
These platforms share one idea: students upload notes, summaries and past exams, and others read them. All of them have added AI features by now. As of October 2026:
- Studocu (StudeerSnel B.V., Amsterdam) is a worldwide library of shared notes, summaries and past exams, mainly for university students. It adds an AI tutor, AI notes and quizzes, a lecture recorder and practice exams. Uploading your own documents unlocks Premium for a while.
- Studydrive is a course-based community for students in Germany, Austria and the Netherlands. Shared documents, course groups and flashcards are at its core. AI flashcards and AI summaries come with Premium, and an AI chat has been announced.
- Knowunity (Berlin) builds an AI study companion on top of notes made by learners, called Knows. The app is aimed mainly at school pupils.
- StudySmarter (Munich, known internationally as Vaia) combines shared study sets with AI flashcards and AI mock exams from your own uploads, for school, university and vocational training.
The benefit is real. A summary from someone who already passed shows you what mattered in the module. Past exams show you question types and difficulty. And in foundation courses such as first-year calculus or introductory economics, the content changes little over the years, so a good set of notes from last year often fits almost one to one.
Shared material is often enough in three situations: for an elective you only need to pass, for a foundation course with stable content, and for a first look at a module before you work through the script. Someone else's outline then shows you in ten minutes how the topics connect. The closer the exam and the more the grade matters, the more your own material counts.
Where other people's notes fall short
The weakness is rarely the document itself. Usually the context does not fit.
A different lecturer means a different exam. The same module can carry the same name at two universities and be examined in completely different ways. Even at your own university, a new lecturer can shift the focus and the question format.
Outdated content. Syllabuses change, and so do laws. In subjects like tax law or medicine, one year is enough for a summary to contain errors.
No quality control. Ratings and downloads show how popular a document is. Nobody checks every formula for you.
Reading feels like learning. The review by Dunlosky and colleagues (2013) compared ten common study techniques. Rereading and highlighting came out weak, practice testing and spaced practice came out best. In an experiment by Roediger and Karpicke (2006), students who had tested themselves repeatedly recalled 61 percent of a text after one week. Those who had only reread it recalled 40 percent. Someone else's summary does not replace practice.
How to check a shared document
Before you study from someone else's summary, take two minutes for these points:
- Same university and same module, ideally with the module code
- From the last one or two semesters
- Same lecturer
- The chapters match your current slides
- Definitions and formulas match your script
- Written in the author's own words, with no copied slides
If two or more boxes stay empty, use the document as rough orientation at most. When summary and slides disagree, the slides win.
What happens to what you upload
Two questions are worth answering before you upload anything or feed it to an AI.
Are you allowed to share the slides? Lecture slides and past exams are usually protected by copyright, as the Munich University of Applied Sciences reminds its students. Posting them where anyone can see them makes them publicly available, and under German law (§ 19a UrhG) that right belongs to the author, which means your lecturer. Most other countries have similar rules. Your own notes in your own words are a different matter from copied slides.
What does the provider do with your input? Even a private upload to an AI tool can be tricky. The University of Bremen treats pasting a protected work into a prompt as a reproduction. A legal review at TU Berlin considers it decisive whether the tool reuses your input. So read the terms:
- On Studocu, according to its terms, free users' AI inputs and outputs are published on the platform. Paying users can keep them private.
- Knowunity states that its AI providers do not train on user input, and hosts mainly in the EU.
- StudySmarter's privacy policy names neither an AI provider nor a storage location.
When in doubt, ask your lecturer. Whether you may use AI for graded work is a separate question, covered in Is AI allowed at university?
The platforms compared
| Studocu | Studydrive | Knowunity | StudySmarter | acemate | |
|---|---|---|---|---|---|
| Aimed at | University | University | School | School, university, vocational | University |
| Material from other learners | ✓ | ✓ | ✓ | ✓ | ✗ |
| AI practice exams | ✓ | not confirmed | ✓ | ✓ | ✓ |
| German interface | ✓ | ✓ | ✓ | ✓ | ✓ |
| Mobile app | ✓ | ✓ | ✓ | ✓ | ✗web app |
As of October 2026, based on the providers' public information.
Combining your own material with shared notes
- Start with your own material. Current slides, script, problem sheets and the module description decide what will be in the exam.
- Get past exams from a clear source. Many student associations collect past exams and know which year and which lecturer they come from. Ask there first.
- Use other people's summaries as a map. Run through the checklist above and mark what is missing from your slides or stated differently.
- Turn the content into questions. Write flashcards or practice questions for each chapter, by hand or with a tool that generates them from your files.
- Spread your reviews. Short sessions on several days beat one long one. The meta-analysis by Cepeda and colleagues (2006) found this advantage across hundreds of experiments.
- Sit a mock exam against the clock. It shows you what you can actually recall. While reading, a lot feels familiar that you could not yet produce yourself.
Where acemate fits
acemate builds on your own material: you upload slides, scripts and past exams (PDF, PowerPoint, Word), and the app turns them into practice material. The AI tutor answers from these files and cites document and page. From past exams, acemate writes model answers and new exams in the same style, exportable as PDF with or without solutions. Flashcards use spaced repetition (FSRS), and the Knowledge Graph shows which topics are still shaky.
What acemate does not have: a library of other students' material, and its own mobile app. The web app does work on your phone. If you mainly want to read other people's summaries, Studocu or Studydrive suit you better.
For head-to-head comparisons, read acemate vs StudySmarter and acemate vs Knowunity. For an overview of every kind of AI study tool, see Best AI study tools for university students.
