A free study app for IB Diploma Biology (first assessment 2025), SL and HL: clear lessons for every topic in themes A to D, cells, genes and ecosystems you can explore, practice for every calculation the exams use, data-based and exam-style questions with worked solutions, and a planner for the scientific investigation. No sign-up.
© 2026 Amir Abdel Baki. All rights reserved. This work has been developed independently from and is not endorsed by the International Baccalaureate Organization.