Your AI study companion.
Understand difficult topics, turn notes into quizzes, and study with a plan. Try StudyBro AI in your browser, or take your revision with you on iPhone and iPad.
Founded in Geneva, Switzerland, by students, for students.
A minute of active recall
Read it. Recall it. Check it.
Explore three prepared examples. This demo does not upload files or call AI.
The electron transport chain pumps protons across the inner mitochondrial membrane. Their return through ATP synthase provides energy to make ATP.
How does the proton gradient help a mitochondrion make ATP?
Reveal sample answerProtons flow down their electrochemical gradient through ATP synthase, providing energy to make ATP from ADP and phosphate.
A sample answer for comparison, without a grade or mastery score.
Understand it. Practise it. Remember it.
Get an explanation that clicks
Ask StudyBro AI to break down a difficult topic, walk through an exercise, or explain it another way.
Practise what you know
Use Quiz to practise from a topic, your notes or a file. Review with flashcards in the app.
Your notes, made useful
Bring your notes or a PDF. Ask for a summary, clearer explanations, or a quiz based on your material.
Built for your curriculum
Romansh and Latin sit next to biology and computer science, because that is what a real timetable looks like.
From a difficult topic to a clear next step.
Start with AI on the web. Keep your study routine going in the app.
Bring a question or your notes
Ask about a topic, work through an exercise, or add a document you are studying.
Understand, then test yourself
Get an explanation, ask a follow-up, then use a quiz to check what has stuck.
Take your learning with you
Use the same account on the web and in the app. Add flashcard review, a study planner, and focused study sessions on iPhone and iPad.
Questions students ask us
Is StudyBro free?
Yes. It is free to download and free to start using, with no credit card. Optional in-app subscriptions and AI credit top-ups are available if you want more.
What device do I need?
Use StudyBro AI in your browser on a computer, tablet or phone. For flashcard review, exam planning and Apple Calendar features, use the Apple app. iPhone and iPad require iOS or iPadOS 26.6 or later; Apple also lists compatibility with M1-or-later Macs and Apple Vision. Use the same account on the web and in the app.
Which subjects does it cover?
German, French, Italian, English, Spanish, Latin, Greek, Russian and Romansh, plus maths, biology, chemistry, physics, natural sciences, computer science, geography and history.
But you can also add your own!
Which exams does it work for?
Whatever you are sitting. Matura, Baccalauréat, A-Levels, university exams or the MCAT.
Is it in my language?
The app runs in 19 languages, including English, French, German, Italian, Spanish, Portuguese, Dutch, Polish, Romanian, Russian, Arabic, Hebrew, Japanese, Korean, Chinese, Thai, Turkish, Vietnamese and Danish.
What happens to my notes?
They stay yours. The Privacy Policy sets out exactly what we store, why, and how to delete it.
Which StudyBro is this?
This is StudyBro at studybro.app, developed by Léonard Maxime Dinichert in Geneva, Switzerland. Our browser app is at app.studybro.app. Use these official addresses to identify our service.
The Science Behind Spaced Repetition & Retrieval Practice
StudyBro is built around research on retrieval practice, spacing, feedback and metacognition. See the evidence behind the way we design studying.
See the science →Tailored Study Plans for Matura, Baccalauréat, A-Levels & University Exams
Explore the tools behind StudyBro, learn the science behind them, or jump straight to the exam you are preparing for.
Rated by students on the App Store
5.0/5 from 6 ratings on the Swiss App Store · checked 20 October 2026
Make your next study session count.
Start with an AI explanation in your browser, or build your study routine in the app.
Try our AIDownload the appFree to start. Use AI in your browser. Get the app for iPhone and iPad.