The Library
Summary notes and practice papers, by subject, level, year and type.
- For
- O Level, A Level and IB students
- Price
- Free to access
No. 01Holy Grail
Live at grail.moe
Holy Grail
Exams are coming.
Your notes are here.
A completely free-to-access web library for Singapore students: summary notes and practice papers for GCE O Levels, A Levels and IB. Curated by students, for students.
- Made for
- Students taking GCE O Levels, A Levels and IB, and PSLE parents
- Price
- Free to access; an optional PSLE pass is S$9 a month
- Made by
- Shukudai Labs, who built it and run it
01.1The numbers
799,473
notes downloaded
82,210
students visited
2,287
accounts created
01.2What is inside
Practice
Generate a printable mock exam of about 100 marks with a realistic topic mix, or pick your own topics.
- Paper
- About 100 marks, printable
- Topics
- A realistic mix, or your own
PSLE paper printer
For parents: the question paper and the answer key as PDFs, in the 2026 format.
- Free
- Two papers a week
- PSLE pass
- S$9 a month: 10 papers a week, no ads
01.3How it is built
Built and run by our team on AWS.
The same stack and habits we bring to consulting work: infrastructure as code, automated tests, and a platform that gets busy every exam season and stays up when it does.
- Front end
- Next.js 16, React 19
- API
- FastAPI, Python 3.11
- Data
- PostgreSQL
- Jobs
- Celery and Redis
- Payments
- Stripe
- Hosting
- AWS ECS Fargate
- Infra
- Terraform
- Run by
- Shukudai Labs
02How to book
Work with the team behind Holy Grail.
The engineers who built and run Holy Grail take on consulting work. Tell us what you are running and where it is giving you trouble.
- [email protected]