Browser
Available nowEvery path and chapter, with nothing to install and nothing to update. Works on phones and tablets as well as computers — any modern browser will do.
Start learningWays to study
Start in your browser. More platforms are coming.
One account and one subscription cover every platform, and your progress follows you between them.
Windows desktop
Coming soonThe same content, installed — and able to run offline. Your lessons stay available with no connection, and your progress syncs the next time you are online.
Android
Coming soonIn development. Until it lands, the browser version is built for phone screens and works today — no app store needed.
What offline study will give you
The desktop app keeps the chapters you have opened available without a connection, so a commute or a flight is study time. Everything you do offline is merged back into your account the next time you connect — the same progress, the same notebook, the same streak.
It needs a subscription in the same way the browser does, and it uses the same account. You will not pay twice.
Want to be told when it is ready?
Releases are announced on the home page, and you can ask us anything on the feedback page.