Find your gaps.
Fix them fast.
Practice with Pebble, your AI study buddy. StudyPebble auto-quizzes you on the skills you're weakest at, schedules past misses for review, and predicts your score as you go.
How StudyPebble adapts to you
Choose SAT R/W, SAT Math, or any of the 20+ AP exams. Start practicing in seconds — no setup.
Every answer updates your skill-level rating. We learn exactly which topics you miss and why.
70% of your next questions target your weakest skills. Past misses come back on a spaced schedule.
“This app actually learns what you suck at and keeps drilling it. My math accuracy almost doubled”
“It showed me I kept missing gene regulation questions. Drilled that one topic and everything clicked”
“Had 10 days before the exam. Cram mode gave me a plan and I actually felt prepared walking in”
“The FRQ grading told me exactly which rubric points I missed. No other app does that”
“Every wrong answer becomes a flashcard automatically. I didnt make a single Quizlet deck”
“The XP system actually makes me want to practice every day. Haven't broken my streak in 3 weeks”
“This app actually learns what you suck at and keeps drilling it. My math accuracy almost doubled”
“It showed me I kept missing gene regulation questions. Drilled that one topic and everything clicked”
“Had 10 days before the exam. Cram mode gave me a plan and I actually felt prepared walking in”
“The FRQ grading told me exactly which rubric points I missed. No other app does that”
“Every wrong answer becomes a flashcard automatically. I didnt make a single Quizlet deck”
“The XP system actually makes me want to practice every day. Haven't broken my streak in 3 weeks”
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