Everything made sense — until you tried to explain it.
Rekal turns anything you’re studying into an AI quiz you answer with your voice. If you can say it, you know it.
Free to download. No account needed.
Question 1 of 10
Explain the difference between mitosis and meiosis in your own words.
Listening...
Sound familiar?
"I understand it while listening, but later, I forget most of it."
— Student on Reddit
"I feel like I understand everything, until I show up to the test and suddenly it’s like I’m seeing the material for the first time."
— Student on Reddit
"I’m almost all the way through a 21-hour video course but don’t remember a lot of it. I wrote notes down, I kept pausing. Why doesn’t it just stick?"
— Student on Reddit
People forget up to 70% of new information within 24 hours.
— Ebbinghaus forgetting curve
You’ve tried everything. Here’s why it didn’t work.
Re-reading & Highlighting
"Just by reading we all think we’ve actually learnt the stuff, but it’s a whole different story when we try to apply it."
Re-reading activates recognition — your brain thinks ‘I’ve seen this before’ and mistakes that for understanding. But exams don’t test recognition. They test recall.
Flashcards & Anki
"I’ve deleted hundreds of decks because I missed a day or two, which turned into weeks."
Flashcards work in theory but collapse in practice. Creation takes longer than studying. Backlogs spiral into anxiety. And tapping the right answer isn’t the same as understanding the concept — you’re memorizing patterns, not building knowledge.
AI Chatbots
"Every time I got stuck I would ask GPT, read it, go ‘mhm makes sense’... and move on. I never really improved."
AI gives you answers. It doesn’t check if you understand them. You feel productive while outsourcing your thinking. The information never becomes yours.
The problem isn’t you. It’s that watching, highlighting, and tapping aren’t studying.
What if studying actually worked?
Walk into your exam calm
You’ve already explained every concept out loud. You know what you know — and more importantly, you know what you don’t. No surprises.
20 minutes that actually count
Active recall is 2-3x more effective than passive review. A short Rekal session replaces hours of re-reading and highlighting.
No backlogs. No guilt. No dread.
No Anki-style review pile-up haunting your notifications. Open the app when you’re ready. It’s ready too.
How it works
Paste anything
YouTube URL, PDF upload, or typed notes. Rekal extracts the key concepts in seconds.
Take a voice quiz
AI generates questions from your content. Answer by speaking naturally, in your own words — the way you’d explain it to a friend.
Get real feedback
Semantic AI grading tells you what you understood, what you missed, and why. Not just right or wrong — actual explanations that fill the gaps.
Built for how you actually study
Voice-first answers
Speaking forces deeper recall than tapping a flashcard. Your voice reveals what you actually know versus what you’re just recognizing.
Semantic AI grading
Understands what you mean, not just what you said. Partial credit for partial understanding. Detailed explanations for every question.
Practice mode
Hide scores entirely. Just learn, without a number judging you. Turn it on when you need a pressure-free session.
No shame design
No streaks. No ‘you missed 5 days.’ No guilt notifications. Study when you’re ready.
Quick Review
A 2-minute micro-session for the gap between classes, the bus stop, or the waiting room.
Works with anything
YouTube lectures, PDF textbooks, typed notes, articles. If you can read it, Rekal can quiz you on it.
Why I built this
I was studying for a test and kept scoring well on AI-generated multiple choice quizzes. I felt ready.
Then I tried to actually explain the material — and completely blanked.
That’s when it hit me: tapping the right answer and knowing the answer are two completely different things. Multiple choice lets you recognize. It doesn’t make you recall.
So I started answering questions out loud instead, in my own words. The difference was immediate. When I could explain a concept, I actually knew it. When I couldn't, I knew exactly what to go back and study. My voice was showing me what I actually understood.
I built Rekal because no app was doing the one thing that actually works — making you prove you know it, out loud.
— Jason, Founder
Start free. Upgrade when you’re ready.
Free
$0/ forever
- 5 quizzes per month
- 10 questions per quiz
- Voice, text, and multiple choice
- AI-powered grading & explanations
- Review past quizzes
Student
$6/ month
Everything in Free, plus:
- Unlimited quizzes
- 20 questions per quiz
- Longer content support (~60 min lectures)
- Enhanced AI grading
- Unlimited AI grading
Upgrade anytime from the app. Cancel anytime. No commitment.
Stop re-reading. Start recalling.
Download Rekal free and take your first voice quiz in under a minute.