A Blog page by students with complete, well explained and illustrated notes for Biology IGCSE (not new spec but still useful).
Includes iGCSE revision questions and revision mind maps.
Revision quizzes from Creative Chemistry site.
Full revision notes on many topics, also questions and quizzes.
Free GCSE science revision app – haven’t tried it so can’t comment further but won’t cost you anything to try!
Fill in the gap type revision of rates, RAM, Haber process etc.