Turn anything into a lesson.
Skip hours of reading. Get it in minutes.
Free to start. 1.3M+ students already study less.
Demo of Raena turning uploaded class material into a lesson
One upload. Every way to study.
Upload your notes once. Raena turns them into a lesson, quizzes, flashcards, a podcast and more.
Works with PDFs, slides, photos, recordings, YouTube and more.
A lesson made from your notes.
Short chapters explain each idea, then quick questions check you've got it.
- Starts at your level
- A quick warm-up checks what you already know.
- Adjusts as you go
- Miss something? The next chapter starts with a quick recap.
- Plans around your exam
- Add your exam date and Raena focuses on what matters most.
Try a question
Where in the cell does the Krebs cycle happen?
Study it your way.
Summary, quizzes, flashcards, a podcast and games, all in one place.
Raena AICellular RespirationAsk Raena🔋 The Krebs cycle
- Acetyl-CoA joins oxaloacetate to start each turn.
- Every turn makes 3 NADH, 1 FADH₂ and 1 ATP.
- Watch out: it never uses oxygen directly, but it stalls without it.
| Stage | Where | ATP |
|---|---|---|
| Glycolysis | Cytoplasm | 2 |
| Krebs cycle | Matrix | 2 |
| Electron transport | Inner membrane | about 34 |
Edit anything. Tables and formulas included.
Turn 200 pages into videos you'll actually watch.
Your reading, cut into short TikTok-style clips over gameplay. Keep scrolling and you've covered it all.
Preview of a brainrot series feed
A tutor that knows your notes.
Ask anything and see exactly which page the answer came from. Raena remembers your exam dates too.
You: wait, why does the krebs cycle need oxygen if it never uses it?
Or just talk it out.
Talk it through out loud. Want tough love? Try Unhinged mode.
SpeakingSpeaking
Nice!
Bring your hardest subject.
Upload your notes and get it in minutes. Your first lesson is free.
Start on your laptop. Finish on the bus.
Works on the web, iPhone and Android.
1.3M+ students already study with Raena
Nursing, law, calculus, history and everything in between, in over 170 countries.
“I use Raena Ai to make Ai generated podcasts that break down each portion of the chapter I am reading for all my classes. Makes it a lot easier to digest chapters and highlight what information is most important. I find it really helpful to download the podcasts to my phone and listen to them on the way to class. I also love to copy and paste my end of chapter vocab/definitions and create flashcards in seconds. I now spend less time preparing to study and more time actually studying.”
“I almost use it every day. I don't think I can live without it anymore. Because of Raena, my grades went up a lot, and it improved my way of studying.”
“Raena has allowed me to understand and simplify complex topics within accounting and finance. From this, I can implement small changes to my answer and overtime, this allowed me to make more comprehensive answers and in thus, allow me to get better grades.”
“I started my first year of medical school after a five-year break from studying, and honestly, I had no idea where or how to even begin preparing for my exams. I felt totally overwhelmed and convinced myself I wasn't smart enough to keep up. But Raena AI changed that. It gave me structure, explained difficult concepts in a way I could actually understand, and reminded me that I can memorise and learn everything, I just needed the right support. Now I don't just study, I study with confidence.”
“When I have a lot of materials to read and go through, Raena AI gives me comprehensive and the most easy-to-understand summaries. Raena AI helps me understand even the most complex files that I don't have the patience to read at all. The flashcards feature as well helped me a lot understanding and retaining complex topics.”
“I'm writing this as the dentistry faculty top student of the first semester, with 3.93 GPA, thanks to Raena AI. I've discovered Raena AI at the second midterms and it literally changed my academic life. I use the summary option religiously. It simplifies the most complex lectures into something still detailed but much more understandble. I genuinly thank you for your services, my academic game can not be matched now. With gratefulness, Asel.”
What is Raena?
Raena is an AI study app. Upload your notes, slides or lectures and it turns them into a step-by-step lesson with quizzes, flashcards, a podcast and a tutor.
Who is it for?
Students in high school, college and university. People use it for everything from biology and nursing to law, history and calculus.
What can I upload?
PDFs, slides, Word and Excel files, photos of your notes, lecture recordings, YouTube videos, links and pasted text. You can add more than one to a lesson.
How is a lesson different from a summary?
A summary is something you read. A lesson teaches you step by step, with short chapters and quick questions. You still get the summary too.
Can I make just a quiz or a brainrot?
Yes! Upload your notes and pick the one thing you want, like a quiz, flashcards, a podcast or a brainrot.
Is Raena free?
Yes, you can start free with no card. Pro unlocks unlimited lessons, quizzes, flashcards and tutoring, and you can cancel anytime.
Does it work on my phone?
Yes. Raena is on iPhone and Android, and in any browser at app.raena.ai.
Are my notes private?
Yes. Your uploads and lessons are private unless you choose to share them. We use industry-standard encryption and never sell your data.
Can I earn money by sharing Raena?
Yes! The affiliate program pays 50% recurring commission on paid referrals, for life.