This app supports both ARMY BOMB V3 and ARMY BOMB SE versions. One of the main features of the app is the Concert Mode, where users can enter their concert ticket information and pair their light stick. This allows them to enjoy various stage effects during the concert. The Concert Mode is enabled several days prior to the concert.

To connect the light stick with a smartphone, users need to switch it to "BLUETOOTH MODE" and turn on the Bluetooth function on their smartphone. Some smartphones may require the GPS function to be turned on for Bluetooth connectivity. If there are any issues with the Bluetooth connection, users are advised to turn on the GPS function.

Once the light stick is connected to the smartphone via Bluetooth, users can use the Self Mode feature. In this mode, they can select a color on the screen and the light stick will change its color accordingly. There is also a Battery Check feature in the Self Mode, which allows users to check the battery level of their light stick and determine if it needs to be replaced.

In order to ensure a smooth experience with the light stick during the concert, users are advised to check their seat information on their ticket and enter it on the light stick in advance. It is important to complete the pairing process between the light stick and the seat through the app. Users should also make sure to be seated in the same seat where they registered the light stick, as moving to a different seat may affect the stage appearance. Checking the light stick battery in advance is also recommended to prevent it from turning off during the concert. The app requires certain permissions, such as access to device storage, phone status and identity, camera, BLE (Bluetooth Low Energy), and GPS. Users with Galaxy S10e, S10, or S10+ models may experience unstable Bluetooth connection and are advised to visit a Pairing Booth for assistance. The stage production integrating the BTS LIGHT STICK will be featured in shows worldwide, including the United States and Europe.