To make sure your reading progress, highlights, preferences, and insights are always saved, you need to log in with your email address and have an active Premium subscription.
Here’s what matters:
Logged-in users with Premium access will have their data securely saved and synced across devices.
Your progress, saved books, and insights will be visible anytime in the Profile section.
If you use the app without logging in, your progress is saved only on the device you’re using — and can be lost if you log out, delete the app, or switch devices.
Important:
Some features, including detailed progress tracking and insights, are only available to Premium users. If you’re not on a Premium plan, these features may be limited or hidden.
To keep your learning history safe and always accessible, make sure you’re logged in and subscribed.