Light diagrams fixed, and questions show their animation first. - Every light ray now meets the surface it bounces from and reaches the eye, and the prism bends light the right way. - When a question depends on seeing something move, its animation plays before you choose. - The electrical power lessons use the syllabus words: power and power rating. - Fixed a freeze after answering in some lessons, and the close button always works. - Privacy and safety improvements for profiles, the leaderboard and notifications.

Notes back in the lessons, and every diagram drawn. - Each topic's notes now sit between the question cards that test them. - Long notes cards are split into short ones, each with its own diagram. - New cards show the common trap, and a model answer written for full marks. - Diagrams draw the real thing: scissors, a wheelbarrow, a crowbar under a rock, a calorimeter. - Pinch any diagram to zoom, or open it full screen. - Measurement is split into shorter lessons. - The weekly champion now appears in Achievements.

Every physics lesson, rebuilt. - Each lesson card now asks you to decide something before the diagram shows the answer. - The diagrams draw the real apparatus: the ramp, the lens, the ammeter, the magnet. - Radioactivity arrives as a new topic. - Lessons and question sets open from your phone first, so they load faster. - Fresh words on the 4 pm and 10 pm practice reminders.

A leaderboard for your friends, and electricity rebuilt. - The weekly league is now a leaderboard: race your friends this week, or see everyone with a public profile. - Current of Electricity, D.C. Circuits and I–V Characteristics are rebuilt as short cards, with circuits that show the charge moving. - More questions draw the diagram they describe. - Build the equation accepts any correct arrangement. - Rate any question or lesson card, and bookmark what you want to come back to. - See who reacted to your posts, and get a notification when they do. - Forgot your password? Reset it from the sign-in screen.