Why a connection is needed
Lessons, your dashboard, and saved progress all load from the web. Your typing runs in the browser, but loading content and syncing stars and streaks needs a connection.
No installation required
Because the platform runs entirely in your browser, there is no app to download. See do I need to install anything.
Tips for a steady experience
Use a reliable network and a current supported browser. A weak connection can make pages load slowly, which can feel like the lesson is stuck.