Free chapters
Chapter 1 of five real courses, exactly as the app wrote them. Each one is 10 cards, takes about 5 minutes, and ends with the same quiz you’d get in the app. No account needed.
HistoryWhy 476 is the wrong date, why Rome was not the capital, and what actually stopped working.
Read chapter 1
HardwareHow a chip made of tiny switches ends up running everything on your phone.
Read chapter 1
ScienceEvery animal does something dangerous for a third of its life, and nobody can say for certain why.
Read chapter 1
EconomicsWhy "too much money" is only half an answer, and why expectations do most of the work.
Read chapter 1
TechnologyYour phone works out where it is by timing radio signals, and relativity matters more than you’d think.
Read chapter 1Each course is about 50 cards over 5 chapters, so this is the first tenth. Chapter 1 works on its own, so you don’t have to carry on to get something out of it.
If none of these is what you want to know, the app will write a course on whatever you ask. Get the app, or read how the courses are made.
