The ultimate study companion for IGCSE, O Level & A Level students. Get instant AI-powered grading, topical questions, examiner reports, and challenge friends in Multiplayer Matches to crush your exams.
For CAIE IGCSE, O Level & A Level
15,000+ past papers, topical questions and instant examiner-style AI grading, plus multiplayer matches with friends. Free on web, iOS and Android.
How it works
Choose from 150+ IGCSE, O Level and A Level subjects. Find any paper by year, session and variant in seconds.
Solve yearly or topical papers in Paper Mode, with the question paper, mark scheme and a calculator side by side.
AI marks your answer against the official mark scheme, so you see exactly where marks were lost and how to get them back.
Features
Built for Cambridge students, by a Cambridge student.
Snap or type your answer and get it graded against the official CAIE mark scheme in seconds.
Challenge friends or students worldwide to real-time matches on real past paper questions.
Every paper and topic you solve feeds your dashboard, so you always know what to revise next.
And so much more
Every CAIE paper from 2001 to 2026 with mark schemes, sorted by subject, year, session and variant.
MCQ and structured questions sorted by syllabus topic, with your progress on every chapter.
Instant scoring, a timer, drawing tools and an explanation for every option.
Step-by-step explanations from an assistant that knows the CAIE syllabus. Ask follow-ups on any question.
Question paper and mark scheme side by side, with a calculator.
Grade thresholds and examiner reports for every paper.
Revision notes for your subjects.
Download once, revise anywhere.
Compare streaks and climb the leaderboard.
Reviews
4.5 average on Google Play
This app is really great. This is like a hidden gem for O level students who need to do a lot of past year Question papers. The multiplayer feature is very smart, and I like it a lot.
great replacement after papacambridge ruined itself. edit: you can also do mcqs inside of the app and have them checked, this is really nice actually
I have tried the application and it has great and extraordinary features. He made it quite easy for current O and A level students to access past papers and notes. 🌟
Great app, it has a lot of potential and the match feature is great, the developers are cooperative as well.
Goated app, instantly motivated me to study more!!
This app is amazing 🤩, the notes are so helpful and valuable I definitely don't regret downloading.
Good work. I am loving the new features. The topicals are so cool.
Such a helpful app, it's so easy to view the paper along with the marking scheme. Vast collection of past papers that are easy to find.
One of the best apps for O level past papers, really simple interface and easy to look for a specific subject and year's past papers. Highly recommended.
Incredible App! Honestly, thank you so much for the effort!
Pricing
$0 forever
$3.99 / month
Schools and groups get bulk pricing. Compare all plans
FAQ
PaperStack is a comprehensive study app built specifically for Cambridge (CAIE) students. It provides access to past papers, marking schemes, examiner reports, grade thresholds, and AI-powered study tools — all in one place.
Yes. PaperStack is free to download and use, with past papers, marking schemes and grade thresholds included. Premium unlocks all topical papers, unlimited multiplayer matches, AI credits and an ad-free experience. See plans.
Take a photo of your written answer or type it in, and the AI compares it against the official mark scheme. You get a breakdown of marks earned, the CAIE keywords you missed, and examiner-style feedback in seconds.
PaperStack supports Cambridge International (CAIE) for both A Level and O Level/IGCSE qualifications. We cover 150+ subjects across both levels with papers from 2001 to 2026.
Yes. PaperStack has an extensive library of topical past papers — MCQ and structured — so you can focus your revision on specific chapters, with AI grading and progress tracking.
Yes. PaperStack runs in your browser at paperstack.cc/app with no installation, and is also available on iOS and Android. Your account syncs across all of them.
PaperStack is a modern alternative to Rove Papers and PapaCambridge. Beyond past papers, it offers AI-powered grading, instant examiner-style feedback, topical questions, multiplayer matches and a fast interface across Web, iOS and Android.
Yes. PaperStack has an eye-friendly dark mode to reduce eye strain during late-night study sessions, and a light mode for daytime.
Our story
Founder & Developer
As a Cambridge student, I experienced the struggle of exam prep firsthand during my O/A Levels. Scattered resources, no easy way to check my answers, and no accessible quality app to find past papers.
I started building PaperStack as a weekend project in my room during my O Levels in 2022, kept improving it through my A Levels, and when I got the chance to focus on it fully during my gap year, I added the features I had longed for back in my time.
Today, it's used by 50,000+ students across 50+ countries, and I get messages from students all over the world about how helpful it has been for them.
Every feature in PaperStack exists because a student asked for it — from AI-powered grading and quick scan explanations, to topical question filters and Multiplayer Matches with friends. I've kept the app free and funded it with my own money. It's shaped entirely by the community it serves.
I'm the only developer behind it, and your support keeps this mission alive.
Join 50,000+ students revising smarter with PaperStack. Free on every device.
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