Prep Den: Your Course Companion, All Year Long
Prep Den is a study platform built for AP® and IB® students: guides that follow your syllabus, flashcards, quizzes, and learning games in the Study Arcade. Every guide includes 12 months of access, so one purchase covers the whole school year, from the first unit to exam day.
21 AP®
Subjects
11 IB®
Subjects
1,000+
Practice Qs
Why students choose Prep Den
No more passive re-reading. Prep Den makes you actively recall, practice, and apply every concept.
Interactive Flashcards
Topic-by-topic flashcards. Track what you know and focus on what you need to review.
Adaptive Practice Quizzes
Multiple-choice quizzes with instant feedback and detailed explanations for every answer.
Topic-by-Topic Coverage
Every topic and subtopic in the curriculum, organized so you always know where you are.
Exam Technique Tips
Targeted advice on command terms, essay structure, and mark-scheme thinking that examiners look for.
AP® Study Guides
AP® Biology
Master all 8 units with original explanations, flashcards, and FRQ-style practice.
AP® Business with Personal Finance
All 5 units plus personal finance, the Business Canvas project, and the four skill categories: built for the 60 MC and 4 free-response questions.
AP® Calculus AB & BC
Limits to series: every AB and BC topic with worked patterns and FRQ-style drills.
AP® Chemistry
All 9 units, the six science practices, and the equation sheet: built for the MC and the 7 FRQs.
AP® Computer Science A
All 4 units, the five computational thinking practices, and the Java Quick Reference: built for the 42 MC and the 4 FRQs.
AP® Computer Science Principles
All 5 big ideas, the six computational thinking practices, and the Exam Reference Sheet: built for the 70 MC and the Create Performance Task.
AP® Cybersecurity
All 5 units and the four cybersecurity skills (analyze risk, mitigate risk, detect attacks, collaborate): built for the 60 MC and the free-response question.
AP® English Language & Composition
Rhetorical analysis, argument, and synthesis essays: the moves that earn the 5.
AP® English Literature & Composition
Poetry, prose, and literary argument: frameworks that earn the 5.
AP® Environmental Science
All 9 units, the four science practices, and the four big ideas: built for the 80 MC and the 3 FRQs.
AP® European History
All 9 units from the Renaissance to today, the seven themes, and the historical thinking skills: built for the MC, SAQ, DBQ, and LEQ.
AP® Human Geography
All 7 units: population, culture, politics, agriculture, cities, and economic development.
AP® Macroeconomics
All 6 units, the four skill categories, and the graphs: built for the 60 MC and the 3 FRQs.
AP® Microeconomics
All 6 units, the four skill categories, and the graphs: built for the 60 MC and the 3 FRQs.
AP® Physics 1
All 8 units, the three science practices, and the equation sheet: built for the 40 MC and the 4 FRQs.
AP® Physics 2
All 7 units, the three science practices, and the equation sheet: built for the 40 MC and the 4 FRQs.
AP® Psychology
All 5 units of the redesigned AP® Psychology: biological bases, cognition, development, social, and mental health.
AP® Statistics
All 5 units of the Fall 2026 course: exploring and collecting data, probability and distributions, and inference for proportions, means, and regression.
AP® U.S. Government & Politics
Foundations, branches, civil rights, and ideologies: built for FRQ and MC.
AP® U.S. History
1491 to present: every period with original analysis and DBQ/LEQ strategy.
AP® World History: Modern
c. 1200 to present: every unit, the six themes, and comparative reasoning.
IB® Study Guides
IB® Biology HL/SL
Master all four IB® Biology themes: first assessment 2025: with interactive flashcards, quizzes, and HL extensions.
IB® Business Management HL/SL
Master IB® Business Management (first assessment 2024): five units plus the Toolkit, exams, and IA: with frameworks, case study practice, and the four key concepts.
IB® Chemistry HL/SL
From atomic theory to organic chemistry: master every IB® Chemistry concept with interactive tools.
IB® Economics HL/SL
From supply & demand to macroeconomics: master IB® Economics concepts and exam technique.
IB® Environmental Systems & Societies HL/SL
Master ecosystems, sustainability, and environmental value systems for IB® ESS: HL lenses included.
IB® Film HL/SL
Ace IB® Film with guided analysis of cinematic techniques, film movements, and textual analysis skills.
IB® Global Politics HL/SL
Navigate power, sovereignty, and global issues with deep-dive guides and engagement activity support.
IB® History HL/SL
Master IB® History source analysis, essay writing, and key events across all major topics.
IB® Math Analysis & Approaches HL/SL
Master IB® Math AA with step-by-step topic guides, formula practice, and HL extensions including complex numbers and proof.
IB® Math Applications & Interpretation HL/SL
Master real-world math modeling, statistics, and technology use for IB® Math AI.
IB® Psychology HL/SL
Master the concepts, approaches, and contexts of the new IB® Psychology syllabus for top marks.
How Prep Den works
Getting started with Prep Den takes less than two minutes.
Create a free account
Sign up with your email address in under a minute.
Pick a guide or a pass
Buy one guide, a Student Pass for any three, or Platinum for every guide. Pay once for 12 months.
Study smarter, score higher
Work through flashcards, quizzes, and interactive tools at your own pace.
One-time pricing, no subscription
Pay once for 12 months. Taking several exams? A pass covers them all for one price.
Single Guide
One subject, covered end to end.
$24.99per guideOne-time payment. 12 months of access.
- One AP or IB guide of your choice
- Full flashcards, quizzes, and worked examples
- Every Study Arcade game unlocked
- 12 months of access from purchase
- Most popular
Student Pass
Any 3 study guides for 12 months. Pick them now or add them whenever you like.
$49.99up to 3 guidesOne-time payment. 12 months of access.
- Up to 3 AP or IB guides of your choice
- Add guides later, whenever your schedule is set
- Full flashcards, quizzes, and worked examples
- Every Study Arcade game unlocked
- 12 months of access from purchase
- Best value
Platinum Unlimited
Every AP and IB study guide, plus every guide we publish this year, for 12 months.
$74.99all 32 guidesOne-time payment. 12 months of access.
- Every AP and IB guide in the library
- New guides included automatically as they launch
- Full flashcards, quizzes, and worked examples
- Every Study Arcade game unlocked
- 12 months of access from purchase
What's included in every Prep Den guide
Pay once, study for 12 months, everything you need.