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The official app for CHULACK has been released!In this app, you can receive the latest information of CHULACK and use useful functions.[What you can do with the app]The following can be performed using this application.1. Check the latest information!You can check the service contents of CHULACK.Also, you will receive a message from the store, so you can always check the latest information.2. Check the information on My Page!You can check the usage status of CHULACK.3. Refer to a friend!You can introduce the CHULACK app to your friends through SNS.4. Full of other useful functions!