The complete study companion for
Built by Stem Cell Tuition — your OCR A examiner and teacher.
9 years of past papers + full mark schemes, 23 detailed workbooks, over 5,000 real exam questions and mark scheme points.
Free to start · No credit card · Made for OCR A students
Why students trust BioBud
Past papers marked in one click
Upload your paper — get a grade, mark-by-mark feedback and next steps.
100+ hours training the AI tutor
Hand-tuned by an OCR A examiner so answers match what markers reward.
23 detailed teacher workbooks
From 15+ years teaching OCR A Biology — covering every spec point.
Study planner
A personalised revision plan built around your exam date and weak topics.
9 years of OCR A past papers
Every paper with full mark schemes — indexed and cited by the tutor.
5,000+ real exam questions
Real questions and mark scheme points powering every quiz and answer.
Topic quizzes
Every chapter and sub-topic drilled with mark-scheme-accurate questions.
Flashcards
Simple mode, coach mode, community deck, saved cards and create-your-own.
The study game
Feed and evolve your creature as you master biology — revision that sticks.
Compete with friends
Leaderboards, streaks and head-to-head challenges to keep you going.
How it works
Sign up free
Tell us your target grade.
Take the daily quiz
All actions, grow your creature.
Master every chapter
Use the AI tutor and roadmap to hit your A.
BioBud is free for verified teachers
Sign up, then go to profile and apply from there. Jason reviews each application personally, usually within 48 hours.
- Fully built teaching PowerPoints for all 23 chapters
- Everything in Pro (unlimited AI Tutor, Coach, photo uploads)
- Complete matching PowerPoints for all workbooks
- Full downloadable PDFs of all workbooks
- Significantly higher AI marking limits
- Class codes to easily share BioBud with your students
- Ready-made topic checklists & schemes of work
- Priority feature requests
- Priority support & direct chat with the creator