The ILLIT Official Light Stick app is designed for fans attending concerts, providing essential features to enhance the experience with the connected Light Stick. Users can easily connect their smartphone to the Light Stick via Bluetooth, allowing for personalized control of color, brightness, and effects. The app enables a concert mode that syncs with ticket information, ensuring that fans can enjoy dynamic stage effects during performances.

To maximize its functionality, users must register their concert ticket information and pair their Light Stick ahead of time. The app also emphasizes the importance of staying within designated seating areas to ensure optimal performance of the Light Stick. Additionally, the app requires permissions for location, storage, NFC, and Bluetooth to function effectively, making it a comprehensive tool for concert-goers.