Best IGCSE Science Revision Websites in 2026

The best IGCSE Science revision website depends on which part of Science is costing you marks. Biology needs accurate recall and precise wording. Chemistry mixes concepts, calculations and practical technique. Physics adds equations, units and multi-step problem solving. A website that is excellent for one of those jobs is not automatically the best for all three. In 2026, the strongest options include platforms built for structured notes, free topical questions, interactive recall, video teaching, Cambridge-specific exam practice and feedback on written work.

Quick comparison

How these Science websites were compared

This page is narrower than a general revision-websites roundup. A platform only belongs here if it offers meaningful IGCSE Science support rather than being useful for revision in general. I checked Biology, Chemistry and Physics separately, looking at board fit, notes or teaching content, calculations, practical skills, topic questions, real papers, marking or feedback and free access. Combined and Co-ordinated Science are mentioned only where the provider currently shows dedicated coverage.

For Cambridge students, the subject code matters. Separate-science students may be taking Biology (0610), Chemistry (0620) and Physics (0625), while Cambridge Combined Science (0653) and Co-ordinated Sciences (0654) have different depth and assessment structures. Do not assume a resource for one route is automatically complete for another.

Science coverage at a glance

1. Cognito — best for learning Science visually, then practising

Cognito is one of the clearest Science-first platforms in this list. Its current revision hub covers Biology, Chemistry, Physics and Combined Science, with board selectors that include CIE IGCSE and Edexcel IGCSE where available. The Science workflow combines revision notes, short video lessons, quizzes, flashcards, exam questions and past papers. For Cambridge IGCSE Biology (0610), Cognito currently offers topic-mapped quizzes and exam practice that explicitly identify the CIE Extended course. That makes Cognito particularly useful when you understand more quickly from a diagram or worked visual explanation than from a long page of text. In Physics, that can help with graphs, waves and circuits. In Chemistry, it is useful for particle models, bonding and calculations. In Biology, the short learn-then-test cycle is useful for large content-heavy topics where passive rereading stops working. The limitation is that you still need to select the correct board and course. Cognito itself says Cambridge IGCSE is available where supported rather than presenting every subject as identical across boards. Use its teaching and quizzes, then move into Cambridge-specific past-paper questions before the exam.

Official site: Cognito Science revision

2. Save My Exams — best for detailed, structured Science revision

Save My Exams is strongest for students who want one polished structure covering content and exam practice. Its current IGCSE Biology, Chemistry and Physics sections each include board-specific revision notes, exam questions, flashcards, mock exams and past papers. The notes are regularly updated, and Cambridge pages identify the relevant course rather than presenting one generic IGCSE version. It is also one of the clearest options for students who are not taking three separate Sciences. Save My Exams currently has dedicated Cambridge Combined Science (0653) and Co-ordinated Sciences (0654) note collections, split into Biology, Chemistry and Physics components. That matters because a Combined Science student should not revise from a full separate-science set and assume the depth is identical. The trade-off is cost. Save My Exams is a freemium platform, and the complete resource library sits behind Premium. It makes the most sense when you value a consistent written style across all three Sciences and want notes, questions and papers organised in the same system.

Official site: Save My Exams IGCSE Science

3. Physics & Maths Tutor — best for free Science questions and worksheets

Physics & Maths Tutor, usually called PMT, remains one of the strongest free Science libraries. It has dedicated CAIE IGCSE pages for Biology (0610), Chemistry (0620) and Physics (0625). The current topic pages combine notes, flashcards or factsheets, questions by topic and mark schemes, while the main course pages also separate practical skills from theory. PMT is especially good when you already know what is weak. If stoichiometry is the problem, you can go directly to Chemistry questions. If inheritance is weak, you can stay inside that Biology topic. If motion graphs are costing marks, you can drill Physics questions rather than completing an entire paper. That makes it efficient for targeted practice. The limitation is the workflow. PMT largely gives you the resources and expects you to organise the revision yourself. There is less built-in diagnosis, progress tracking or guided feedback than on an interactive platform. For disciplined students, that simplicity is often an advantage; for students who repeatedly practise without analysing mistakes, it can become a pile of PDFs.

Official site: Physics & Maths Tutor

4. Seneca — best for interactive recall across the Sciences

Seneca is useful when your biggest problem is remembering a large Science syllabus. Its current IGCSE area says its courses are aligned to the latest Cambridge and Edexcel specifications and cover more than 14 subjects. Current Cambridge International course pages exist for Biology, Chemistry and Physics, with short explanations followed by interactive questions. This suits Biology particularly well because so much of the subject depends on retrieving precise processes, structures and definitions. It also works for Chemistry and Physics concepts that need repeated recall before you can apply them. Seneca's Cambridge Physics and Chemistry pages currently include free interactive questions embedded directly in the topic notes. Do not confuse course completion with exam readiness. Multiple-choice and recall questions can show whether a fact is available in memory, but they do not fully reproduce the demands of longer Cambridge structured responses, calculations or practical-analysis questions. Use Seneca for learning and consolidation, then move into real papers.

Official site: Seneca IGCSE

5. ZNotes — best for concise free Cambridge Science notes

ZNotes remains one of the easiest free options for Cambridge Science students who already understand a topic and want a compressed review. Its live CAIE library contains Biology (0610), Chemistry (0620) and Physics (0625), with theory pages and quizzes available across the three subjects. The wider ZNotes site also lists Combined Science among its subjects. The main advantage is speed. A concise summary can be much more useful than rereading a textbook the night before a quiz or before you begin topical questions. ZNotes also gives students a quick way to test recall after reading instead of leaving the revision as passive notes review. The caution is freshness. Large community resource libraries can keep older downloadable files accessible even after a syllabus window changes. For example, an indexed Physics PDF still identifies itself as updated to the 2023-2025 syllabus. That does not make the content useless, but it means the current Cambridge syllabus should be your checklist before you rely on any older PDF for 2026 exams.

Official site: ZNotes

6. Tutopiya — best for a broad Cambridge Science resource stack

Tutopiya now has a substantial Cambridge IGCSE resource hub rather than only a tutoring offer. Its current Cambridge page includes Biology, Chemistry, Physics and Coordinated Science, with revision notes, video lessons, practice questions, AI-marked quizzes and past papers. Separate lesson-note pages also show full topic coverage for Biology (0610), Chemistry (0620) and Physics (0625). That breadth is useful if you want one platform to move between learning, questions and feedback. Tutopiya's current quiz finder lists subject-level Cambridge quizzes for all three separate Sciences, while its topic-question bank provides worked answers and AI assistance. The free lesson notes are also useful even if you do not subscribe to the wider platform. The trade-off is that Tutopiya is a large ecosystem, so not every student needs every layer. If you only want a free set of topical questions, PMT may be faster. If you want notes, videos, practice and optional tutoring or AI feedback in one system, Tutopiya is more relevant.

Official site: Tutopiya Cambridge IGCSE resources

7. NeuraGeek — best for Cambridge Science practice and feedback in one workspace

NeuraGeek is most useful after you move beyond reading. Its Cambridge subject pages are organised around syllabus maps and practice, and the current Chemistry (0620) and Physics (0625) pages are mapped to the 2026-2028 syllabus structure. The wider platform connects subject-specific AI Tutor support with quizzes, past papers, topical papers, custom tests, mock papers and answer feedback. That is especially relevant in Science because different mistakes need different responses. A Biology answer may lose marks because the wording is vague. A Chemistry calculation may fail because one mole step is wrong. A Physics answer may have the right formula but the wrong unit. A connected practice-and-feedback workflow is useful when the goal is to diagnose that difference rather than simply generate more questions. NeuraGeek is deliberately Cambridge-focused, and the company states that subject and tool availability varies by syllabus. It therefore makes most sense for students who want their Science practice tied closely to Cambridge papers and topic structures rather than a platform spanning many unrelated exam boards.

Official site: NeuraGeek

Why one Science website may not solve all three subjects

Biology, Chemistry and Physics reward different habits. Biology contains a large amount of terminology and process knowledge, so recall tools and precise mark-scheme language matter. Chemistry moves constantly between definitions, symbolic equations, calculations, practical observations and explanations. Physics often depends on identifying the correct relationship, rearranging it accurately, using consistent units and then explaining the result. That is why a sensible student may use the same primary platform across all three Sciences but rely on different features. You might use Seneca or ZNotes for Biology recall, PMT for Chemistry topic questions, and Cognito videos for a Physics concept that is not making sense. The goal is not to collect websites. It is to match the resource to the specific Science problem.

A practical IGCSE Science revision stack

Do not ignore practical skills

A Science website can look comprehensive while doing very little for practical assessment. Check whether it includes experimental design, variables, measurement, graph work, observations, data interpretation and the practical route used by your course. PMT explicitly separates practical skills in its CAIE Science pages, while other platforms include practical material inside topic notes, exam questions or past-paper sections. For Cambridge separate Sciences, all candidates ultimately need practical understanding even when they take an Alternative to Practical paper rather than carrying out the assessed experiment. Reading a description of an experiment is not enough. Practise drawing tables, identifying variables, interpreting unusual results and explaining how a method could be improved.

Frequently asked questions

1. What is the best free website for IGCSE Science revision?

PMT, ZNotes and Seneca all offer meaningful free Science revision, but they solve different jobs. PMT is strongest for free topic questions and paper-style practice, ZNotes for concise notes, and Seneca for interactive recall. Cognito also lets students start revising for free.

1. Which website is best for Cambridge IGCSE Biology (0610), Chemistry (0620) and Physics (0625)?

Use platforms that explicitly identify Cambridge or CIE support for the separate Sciences. Save My Exams, PMT, Cognito, Seneca, ZNotes, Tutopiya and NeuraGeek all show current Cambridge Science coverage in different forms. Choose based on whether you need teaching, recall, questions, papers or feedback.

1. Can Combined Science students use separate-science websites?

Only carefully. The underlying concepts overlap, but the depth and assessment structure are not identical. If you take Cambridge Combined Science (0653) or Co-ordinated Sciences (0654), use a resource that explicitly supports your route whenever possible.

1. Should I use one website for Biology, Chemistry and Physics?

You can, but you do not have to. One platform may be your main base while another solves a specific weakness. The important rule is to keep the stack small enough that you spend more time revising than searching for resources.

1. Are notes enough for IGCSE Science?

No. Notes help you learn and refresh content, but Science exams also test application, calculations, practical interpretation and unfamiliar contexts. Every notes session should eventually lead into questions and full-paper practice.

Put it into practice

Pick one Science and one recent mistake. If it was a knowledge gap, relearn the exact topic and test your recall. If it was a calculation error, complete several questions using the same method and check units at every step. If it was a practical question, practise the experimental skill rather than rereading the theory. Then return to a mixed or full paper and see whether the weakness still appears when the topic label is gone. The best Science revision website is the one that helps you complete that loop consistently.

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