CGP publishes well over 250 GCSE titles across Maths, English, the sciences, Geography, History, Religious Studies, languages, Computing, Business and more, for AQA, Edexcel, OCR, WJEC and Eduqas, CCEA and Cambridge IGCSE. Revision Guides run from about £6.75 to £13.25, and Complete Revision & Practice books from about £11.50 to £20.99. Most carry a code for CGP RevisionHub, which adds quizzes, summary tests, videos, an online workbook and a free online edition of the book, with access for three years from redemption.

Atom Home is a platform. You set your subjects, exam boards and exam dates, and it builds a revision plan around them, serves practice targeted at where you are losing marks, and marks full-length papers against genuine exam-board mark schemes.

With CGP, the pace and the sequence are yours. The book does not know which chapters you skimmed, which topics you answered badly, or how long you have left until the exam. Deciding what to revise next is the reader's job, and for a lot of students that decision quietly becomes "whichever bit feels easiest".

Atom Home makes that decision for you. The plan is built backwards from your exam dates, and what comes next is driven by the topics your papers show you are dropping marks on.

This is the central difference. CGP solves content better than almost anyone: clear, concise, board-specific, and very cheap per subject. Working through a CGP Complete Revision & Practice book cover to cover is a sound revision strategy.

What a book cannot do is mark your six-mark answer against the real mark scheme and tell you which two marks you missed and why. Answers at the back tell you whether you were right; they do not tell you how an examiner would have scored what you actually wrote.

CGP is a one-off purchase, not a subscription — and for GCSE there is no CGP online subscription at all. Their 11+ Online product has no GCSE equivalent, so the online material comes bundled with a book rather than sold monthly. A student taking nine GCSEs and buying one Complete Revision & Practice book per subject at roughly £13.75 is looking at around £124 for the set, once, with RevisionHub access included for three years.

Atom Home plans start at £39.99 a month for English, maths and science. Exam Prep is £59.99 a month and Exam Prep Plus, including unlimited mock tests with instant marking, is £69.99 a month. Annual plans save 20%, bringing Exam Prep Plus to £55.99 a month, billed at £671.90 a year.

A CGP book gives you the content, practice questions and answers, plus a RevisionHub code for quizzes, revision summary tests, explanation videos, audio tracks, an online workbook of the book's questions and a free online edition. MathsBuster, their GCSE Maths interactive revision product, is a separate one-off purchase at £13.50. CGP also publishes free online 10-minute tests for GCSE Maths, SPaG and Science.

Every Atom Home plan includes unlimited practice questions, AI marking, an AI tutor and a performance dashboard with predicted grades, topic strengths and gaps, and progress over time. Full-length mock tests are the dividing line between plans: included on Exam Prep Plus, not on English, maths and science or Exam Prep.

CGP does not adapt, and does not claim to. Every copy of the AQA Higher Maths guide is identical, which is exactly why it is cheap and why teachers trust it. RevisionHub keeps a record of your progress and stats when you log in, though CGP does not describe it adjusting what it shows you.

Atom Home builds a picture of your understanding across every topic in your specification and serves targeted practice each time you log on, driven by where your papers show the gaps are.

With a book, you reread the page, check the answers at the back, and if that does not work you ask someone. RevisionHub's explanation videos help here, where the title includes them.

Atom Home includes an AI tutor on every plan, with annotations, flashcards and worked explanations available at the point you are stuck rather than at the back of the book.

CGP sells exam practice papers, and RevisionHub's online workbook reproduces the questions from your book. Marking them is down to you and the answer booklet — CGP does not state that anything is auto-marked.

Atom Home's practice papers are full-length and built on real past-paper formats for your exam board, marked automatically against genuine exam-board mark schemes and reviewed by subject specialists and former examiners. On Exam Prep Plus they are unlimited, so you can sit a fresh paper without repeating questions you have already seen.

A book shows you how far through it you are. RevisionHub keeps your progress and stats against your account, though CGP does not publish detail on exactly what is recorded.

Atom Home reports a predicted grade for each subject mapped to real grade boundaries, with topic-level strengths and gaps underneath and progress plotted over time.

Pages covered is a measure of effort, not readiness. It is entirely possible to finish a revision guide cover to cover and still lose marks on every extended-response question, because nobody has shown you how one is marked.

Atom Home measures the thing you are assessed on — marks against a real mark scheme — and reports it as a grade. If the predicted grade moves, the revision is working.

With books, nothing beyond whether they are open. That is not a failing of the book; it is simply outside what a book does.

Atom Home's dashboard gives a predicted grade against real grade boundaries and a topic-by-topic breakdown, which answers the "is this actually working" question directly.

Price per subject, breadth and trust. Around £13.75 buys a whole subject's content and practice outright, with three years of RevisionHub access included, and the range covers boards and subjects Atom Home does not — WJEC and Eduqas, CCEA, Music, Business, Drama, German and more.

There is also no subscription to remember to cancel, and a book works without wifi on a train. For a student who revises well from a book and marks themselves honestly, CGP may be all they need.

If you need the content explained clearly and cheaply, buy the CGP book. Nothing here beats it on that.

Atom Home is for the next problem along: knowing what to revise and when, getting your answers marked against the real mark scheme, and knowing what grade you are actually on. One subscription gives you a revision plan built around your subjects, exam boards and exam dates, full-length predicted papers with examiner-style feedback on where marks were lost, and a predicted grade that updates as you improve, across AQA, Edexcel, OCR and iGCSE. A CGP book and a marked practice paper are not rivals — they answer different questions.