About Incandio
Incandio is a free GCSE revision platform for the complete Pearson Edexcel International GCSE course — Maths, Biology, Chemistry, Physics, English Literature, English Language, History and Religious Studies. Its method is Learn → Prove → Teach → Defend → Master: a student learns an idea, proves it in marked questions, teaches it back to an AI pupil, then defends it in a debate against the real historical figure who discovered, wrote or shaped it — Shakespeare, Newton, Darwin and hundreds more — until it is mastered.
It is completely free — no subscriptions, no paywalls, and no account is needed to start. It covers 8 Pearson Edexcel International GCSE courses, 939 taught units, and every unit has a public page you can read without signing in.
What is Incandio?
Incandio is a free GCSE revision platform built around active understanding rather than passive reading. Students learn a topic, prove their knowledge in marked questions, teach it back to an AI pupil, and defend their ideas in conversation with the thinkers, writers, scientists and historical figures connected to what they are studying.
It covers 8 subjects of the Pearson Edexcel International GCSE — Maths, Biology, Chemistry, Physics, English Literature, English Language A, History and Religious Studies — as a website and a web app. For every idea on each specification it holds an explanation written to be understood before it is memorised, the Grade 9 notes that a full-mark answer needs, questions marked on your own device, and then the two things a revision guide cannot ask of you: you teach the idea back to an AI pupil, and you defend it in a short debate against the real historical figure who discovered, wrote or shaped it.
That sequence has a name here. To Incandio an idea is to learn it, prove it, teach it and defend it — until you have mastered it. What does “Incandio it” mean? · How Incandio works
What makes Incandio different from a revision-notes website
A revision website gives you the notes and a quiz, and stops there. On Incandio, notes and questions are only the first half. The second half is that the people who changed the world with an idea argue with you about it: defend your reading of Macbeth against William Shakespeare, your account of forces against Isaac Newton, your explanation of inheritance against Charles Darwin, your answer on the problem of evil against Augustine of Hippo. Each is a dramatised AI portrayal grounded in the historical record — the figure presses you with what is actually on the record, the marking is against a published rubric, and losing tells you which claim did not hold. That debate, not the notes, is what a topic on Incandio ends with.
Which exams it covers
Incandio is built to one board and one qualification: the Pearson Edexcel International GCSE. Every page names the specification and code it is aligned to, and gives the specification statement numbers so you can check a lesson against your own copy. If you sit a different board's GCSE the ideas overlap heavily, but the statements, papers and mark schemes differ — Incandio does not pretend otherwise, and says which specification it teaches on every page.
What is the difference between a GCSE and an International GCSE?
The International GCSE — also known as the Edexcel IGCSE; Pearson’s own name for the qualification is the International GCSE, and that is the name every Incandio page uses — is Pearson Edexcel's version of the qualification for schools outside the United Kingdom and for some independent schools within it. It is graded 9–1 like a GCSE, covers broadly the same ground in each subject, and is examined on its own specifications and papers, which is why the statement numbers, papers and mark schemes on Incandio are the International GCSE's. Check the code on your exam entry — 4BI1, 4MA1, 4ET1 and the rest below — against the code on the page you are reading.
| Subject | Specification code | Taught units | Depth |
|---|---|---|---|
| Mathematics | 4MA1 | 70 | Full course |
| Biology | 4BI1 | 96 | Full course |
| Chemistry | 4CH1 | 80 | Full course |
| Physics | 4PH1 | 77 | Full course |
| English Literature | 4ET1 | 97 | Full course |
| English Language A | 4EA1 | 20 | Incandio teaches the anthology texts, transactional writing and Component 2 imaginative writing in full — each marked against the real grids. The unseen-reading half of Component 1 is mapped here but not yet taught. |
| Religious Studies | 4RS1 | 210 | Full course |
| History | 4HI1 | 289 | Full course |
The specification maps — papers, assessment objectives and every topic — are at /courses/.
How the content is made
Every unit is written for Incandio against the specification's own statement list: drafted with AI assistance, edited for Incandio, and checked on every build by automated validators. The founder is responsible for everything published here. Nothing is scraped or copied from a textbook or from Pearson. A set of automated checks runs on every build: each course must cover every specification statement it claims; no page may name another exam board's specification as if it were this one; no page may reproduce Pearson's wording; no page may publish a mark scheme or a worked solution to a question it also sets. Quotations from texts still in copyright are short, located in the text and analysed, as criticism.
Some of what you meet in the product is generated live by an AI model (from OpenAI): Ember's questions when you teach, the historical figure's replies when you debate, and the marking of your written answers. In each case an authored, specification-derived rubric decides the outcome — the model reports findings against it, and cannot award what the rubric does not describe. A historical figure's replies are a dramatised portrayal grounded in the historical record; they are not statements by that person.
Accuracy and corrections
Incandio aims for the standard of the real exam and marks against the published assessment objectives, but its marks are guidance, not official marks, and AI-generated content carries no warranty of correctness, and a specification changes. If you find an error on any page — a wrong definition, a statement number that has moved, a quotation that is not as printed — write to support@incandio.com with the page address. Corrections are made in the source the app renders from, so a fix reaches the public page and the app together.
Who makes it
Incandio is an independent, founder-run product. It is not published by, endorsed by, connected to or approved by Pearson Education Ltd; "Edexcel" and "Pearson" are Pearson's trade marks, used here only to say which specification a page teaches towards. There are no advertisers and no sponsored content.
Incandio elsewhere
The official Incandio accounts: YouTube · Instagram · TikTok. Anything else using the name is not us.
Start anywhere
- Mathematics — Pearson Edexcel International GCSE in Mathematics (Specification A) (4MA1)
- Biology — Pearson Edexcel International GCSE in Biology (4BI1)
- Chemistry — Pearson Edexcel International GCSE in Chemistry (4CH1)
- Physics — Pearson Edexcel International GCSE in Physics (4PH1)
- English Literature — Pearson Edexcel International GCSE in English Literature (4ET1)
- English Language A — Pearson Edexcel International GCSE in English Language (Specification A) (4EA1)
- Religious Studies — Pearson Edexcel International GCSE Religious Studies (4RS1)
- History — Pearson Edexcel International GCSE in History (4HI1)
- Diffusion, Osmosis and Active Transport — the reference lesson, and the one most people Incandio first.
- The historical figures — the people you will be debating.