Built by a student, for students.

Hey, I'm Aleko. I'm 17 and I built StudyPebble because I was tired of study apps that either cost $250+ or just throw random questions at you with no plan. I wanted something that actually learns what I'm bad at and fixes it.

Why I built this

I was studying for AP exams and realized every app was either free but basic (Khan Academy), or good but insanely expensive (UWorld at $250+, Albert at $79/subject). Nothing in between actually adapted to what I needed to work on. So I built it myself.

StudyPebble uses the same kind of rating system that chess uses (Elo) to track your skill level on every topic. When you get something wrong, it remembers. When you get something right, it moves on. It's not random. It's not a static question bank. It's actually watching how you perform and adjusting in real time.

What makes it different

2,000+ questions
20 AP subjects + SAT, all aligned to College Board skill codes
AI tutor
Ask Pebble anything, get a real explanation, not a textbook copy-paste
AI FRQ grading
Write your free response, get it scored against the actual AP rubric
Auto-flashcards
Every wrong answer becomes a review card with spaced repetition
Cram mode
Enter your exam date, get an urgency-matched daily plan
Wrong Answer DNA
AI finds hidden patterns in your mistakes across subjects

The numbers

2,000+
practice questions
20
AP subjects + SAT
94%
report higher confidence
+0.8
avg AP score improvement
$19/mo
vs $250+ competitors

About me

I'm Aleko Kourtidis, a 17 year old developer and entrepreneur. I've built and shipped multiple apps including Feastmate (AI recipe generator on the App Store), Wholefed (food photo analyzer), EssayCloner, and more. I taught myself to code and have been building AI-powered tools for students since 2025.

StudyPebble is my biggest project yet. I built it because I genuinely needed it for my own AP exams, and I figured if I needed it, other students probably do too.

Contact

Questions, feedback, or just want to say hi? Email me at alekokourtidis@gmail.com.