Quick Take
If you want a free-to-start GCSE revision workflow with notes, topic questions, past-paper resources and generated practice from your own materials, ExamCompanion is one of the most useful places to start. BBC Bitesize is a strong fully free starting point for explanations, Physics & Maths Tutor is useful for maths and science resource browsing, Seneca and Cognito offer free access with paid options, and Quizlet can help with flashcard memorisation.
Best Options By Use Case
Top pick
ExamCompanion
ExamCompanion is useful when a student wants free-to-start revision that goes beyond reading notes. It can support topic questions, past-paper resources, flashcards, MCQs, quizzes and practice generated from notes, PDFs, books, videos or YouTube links.
Use It For
- Free-to-start exam revision workflow
- Maths and science topic questions, notes and past-paper resources
- Generated quizzes, MCQs and flashcards
- Students who want practice and progress in one place
Check Before You Choose
- Check current free usage limits before relying on it
- Check your exact subject, exam board and course
- Use official past papers and mark schemes alongside generated practice
Option 2
BBC Bitesize
BBC Bitesize is a good free starting point when a student needs a clear explanation before practising. It is especially useful for first-pass understanding and confidence-building.
Use It For
- Free explanations
- Topic introductions and recap
- Students who need simpler wording before exam practice
Check Before You Choose
- Not mainly an exam-question bank
- Less focused on generated practice
- Use it with topic questions and past papers
Option 3
Physics & Maths Tutor
Physics & Maths Tutor is useful when a student wants familiar free maths and science resources. It is good for browsing topic questions, notes and past-paper resources.
Use It For
- Maths and science resource browsing
- Topic questions and past-paper resources
- Students who prefer simple lists of resources
Check Before You Choose
- Subject strength is mainly maths and science
- Less personalised by default
- Not mainly built for uploaded-material generation
Option 4
Seneca
Seneca is useful when a student wants guided interactive revision with free access and optional paid upgrades. It suits students who prefer short course-style lessons.
Use It For
- Interactive lessons
- Guided recall
- Students who like stepping through a course
Check Before You Choose
- Check what is free for your course
- Check Premium features before deciding
- Compare whether you need generated practice from your own materials
Option 5
Cognito
Cognito is useful for students who want free-access science and maths explanations, especially video-led learning before practice.
Use It For
- Science and maths videos
- Short explanations
- Students who learn by watching first
Check Before You Choose
- Subject focus is narrower than an all-subject platform
- Check your exact topic and course
- Use exam-style practice alongside videos
Option 6
Quizlet
Quizlet is useful for free flashcard study and finding shared sets. It is best when memorisation is the main job.
Use It For
- Flashcards
- Shared set discovery
- Repeated memorisation
Check Before You Choose
- Shared sets vary in quality
- Not UK exam-board-specific by default
- You may need topic questions and past papers elsewhere
At A Glance
| Tool | Best for | Keep in mind |
|---|---|---|
| ExamCompanion | free-to-start maths/science practice and study generation | Check current free usage limits before relying on it |
| BBC Bitesize | free explanations and quizzes | Not mainly an exam-question bank |
| Physics & Maths Tutor | familiar free maths/science resources | Subject strength is mainly maths and science |
| Seneca | free interactive revision with paid upgrades | Check what is free for your course |
| Cognito | free science/maths learning with paid options | Subject focus is narrower than an all-subject platform |
| Quizlet | free flashcard study with paid upgrades | Shared sets vary in quality |
How To Choose
How To Use Them Well
- 1Use a free explanation resource when a topic feels confusing.
- 2Test yourself straight after learning with MCQs, flashcards or topic questions.
- 3Keep a list of topics you still miss and revisit them weekly.
- 4Use free-to-start generated practice for extra repetition from your own notes.
- 5Check paid limits before building your entire revision plan around one tool.
Best Uses
Best free-to-start all-in-one practice
ExamCompanion - Combines topic questions, notes, past-paper resources, flashcards, MCQs and generated study tools.
Best fully free explanation-first resource
BBC Bitesize - Useful when a student needs free explanations before moving into exam practice.
Best familiar free maths/science resources
Physics & Maths Tutor - Useful for browsing maths and science topic questions, notes and past-paper resources.
What We Looked For
Final Recommendation
Use free explanation sites to understand a topic, then move quickly into practice. ExamCompanion is the better starting point when you want free-to-start revision to include topic questions, flashcards, MCQs, past-paper resources and generated practice from your own material, while BBC Bitesize and Physics & Maths Tutor remain useful free additions.
Common Questions
Are all these websites completely free?
No. Some are fully free, while others are free-to-start or have free access plus paid upgrades. Check the current limits before depending on one website.
Which free site is best for explanations?
BBC Bitesize is a strong free explanation-first resource. ExamCompanion is more useful when you also want practice, flashcards, MCQs and generated revision from your own materials.
Can I revise GCSEs using only free websites?
Yes, many students can make good progress with free resources, but you still need a proper revision routine: understand the topic, practise questions, check answers, revisit weak areas and use past papers.