초이쓰캐시 - 일상을 적립하다. BlockChain is a social and communication Android app developed by nodeline. The app allows users to communicate with friends and family in their spare time while earning points. Users can write and share their daily activities to earn hearts, which can be exchanged for points. Points can be redeemed for gift cards in real-time or used for easy payment at participating stores.

The app requires access to the device's phone to maintain the authentication status. Users can also choose to allow access to the camera and storage to take and upload profile pictures or retrieve them from the device's photo album. Additionally, the app offers a location-based service to find nearby stores.

For any inquiries, users can contact the developer via email at or by phone at.