1.Weverse- This app is an app that can interact with stars, but it's not like a bubble. The interaction of this app is like sending friends. You can send your favorite star, and if you are lucky, you will be overturned. But this app is not used by every star ~ (there are solo and combination stars, such as Treasure, Enxipeng, BTS, Henry, TXT, and artists such as from is-9, Black Powder and cl all use this app. ) Almost all artists under hybe & ampyg use this app. 2.Vlive- this application is a star live broadcast application. In addition to the live broadcast, the company will also make announcements on vlive or something ~ and if you miss the live broadcast, there seems to be a live broadcast record to play back. What about this app? Each group &; Solo artists are using it, so don't worry about not finding their own stars ~3. Universe-this app is similar to weverse and can interact with stars. Just mentioned that weverse doesn't have the chat function like Lyn, but the universe does. It looks like it needs money. Sometimes this app is a bit stuck, but overall it is not bad. This app is not used by every star. Boyz, G-Idle, Kepler, Daniel Conde, Ab6IX, Monsta X and other star groups are all here.