The Library Pass is a monthly subscription that you can get in the game's shop. It removes ads between levels, grants you 10% bonus brilliance from all sources, provides an improved daily gift and daily spinner, and turns your name gold in your player profile and on the leaderboard.

The subscription is managed, depending on your device, from the Apple App Store or Google Play Store.

In case you want to cancel it, we invite you to visit the following articles: How can I cancel my Library Pass subscription?