Simple pricing. No surprises.
Free: 10 MCQ + 10 Cloze per day. Pro: unlimited everything.
Have a promo code? Apply it on the Stripe checkout screen.
- 10 MCQ per day
- 10 Cloze per day
- All subjects
- Diagnostic test
- FRQ grading
- AI tutor + explanations
- Cheat sheets
- Matching / Fill-blank / Drill
- Unlimited questions
- All modes (7 practice types)
- AI explanations every question
- FRQ rubric grading
- Cheat sheets + study plan
- Ask Pebble AI tutor
- Everything in Pro
- Best value — 2 AP seasons covered
- Billed annually
- Cancel anytime
Why adaptive beats everything else →
Questions
Can I use it for free?+
Yes — 10 MCQs + 10 Cloze per day forever, no credit card needed. Other modes (matching, fill-blank, FRQ grading, AI tutor, cheat sheets) are Pro-only.
Are the questions real CollegeBoard questions?+
Our bank is based on official practice tests and released exam questions. When those run out, we generate AI questions that match the exact format, style, and difficulty of real AP exams.
How does it know what I'm bad at?+
StudyPebble tracks your performance on every skill using an adaptive rating system. When you get something wrong it remembers and keeps drilling your weak areas until they're not weak anymore.
What subjects are covered?+
SAT Reading & Writing, SAT Math, and 20+ AP subjects including Bio, APUSH, Psych, Calc, Physics, Chem, Gov, and more.
Can I cancel anytime?+
Yes. Cancel in one click from your profile — no fees. Your progress is always saved.
Does it work on my phone?+
Yes — any browser, any device, no app needed.