PaperStack: IGCSE & O Level

paperstack.cc (CAIE Resources)

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About this app

Prepare for IGCSE and O Level exams with PaperStack, an all-in-one past paper revision app.

Practice 15,000+ past papers, solve topical MCQ and structured questions, get AI-powered marking and explanations, compete in real-time multiplayer, and track your revision in one place.

Built by students, for students. PaperStack is designed to make past paper practice faster, easier, and more engaging.

PAST PAPER LIBRARY
Access 15,000+ past papers, question papers and marking schemes across 250+ subjects, regularly updated with new exam sessions.

Filter by year, season and variant. Switch instantly between the Question Paper and Marking Scheme, or open both together using Split Mode.

TOPICAL PAST PAPERS
Practice by topic instead of searching through entire papers. Solve topical MCQ and structured questions across supported subjects, with filters for topic and difficulty.

Save questions and return to bookmarked questions later.

EXAM MODE
Create timed practice sessions using selected topical questions and complete them under exam-style conditions before viewing your results.

INTERACTIVE MCQ SOLVER
Solve past paper MCQs directly inside PaperStack. Get instant marking and feedback, review mistakes, and track your answers as you work through a paper.

STRUCTURED QUESTION PRACTICE
Answer structured past paper questions directly inside the app. Submit your response and let PaperStack Intelligence evaluate it against the relevant marking scheme, showing which marking points you earned and what you missed.

PAPERSTACK AI TUTOR
Get AI-powered explanations using the question, marking scheme and relevant examiner guidance. Understand why an answer is correct, how marks are awarded, and where your reasoning went wrong.

REAL-TIME MULTIPLAYER
Challenge friends or other students to live MCQ and structured-question matches and climb up the leaderboard.

Choose yearly papers or specific topics, select the number of questions, compete in real time, and compare results when the match ends.

LEADERBOARDS
Compete in PaperStack matches & gain XP solving questions and climb public leaderboards to see how your performance compares with other students.

PROGRESS & MISTAKE REVIEW
Review mistakes, revisit saved questions and use your previous performance to decide what to practice next.

SMART PDF VIEWER
Study directly from full past papers with:
• Dark mode
• Floating Calculator & Formulae Sheets
• Split-screen Question Paper and Marking Scheme
• Bookmarks
• Built-in timer
• Drawing and annotation tools
• Sharing and printing

OFFLINE ACCESS
Download papers once and access them later without an internet connection.

SUBJECTS
PaperStack supports hundreds of IGCSE and O Level subjects, including Mathematics, Physics, Chemistry, Biology, Computer Science, Business Studies, Economics, Accounting, Islamiyat, Pakistan Studies, English, and more.

Download PaperStack and turn past paper practice into progress.

DISCLAIMER
PaperStack is an independent educational and revision platform. It is not affiliated with, endorsed by, sponsored by, or officially connected with Cambridge University Press & Assessment, Cambridge International Education, or any other examination board.

Cambridge, Cambridge International, IGCSE, O Level, CAIE, and related trademarks and examination materials remain the property of their respective owners. PaperStack does not claim ownership of third-party examination content or trademarks.

PaperStack is provided as an independent study and revision tool. While we aim to keep resources accurate and up to date, we cannot guarantee the completeness or accuracy of all examination materials. Students should refer to their examination board's official publications for authoritative information and resources.

Official Cambridge International information: cambridgeinternational.org

Privacy Policy:
https://paperstack.cc/privacy.html

Terms of Use:
https://paperstack.cc/terms.html

What’s new

• Improved AI explanation and mark scheme breakdown display