Whaletapp is an innovative application designed to assist cross-border e-commerce users in managing foreign exchange submissions according to Chinese regulations. It caters to the need for authentic and legitimate transaction backgrounds, a requirement for cross-border trade-related foreign currency income and expenditure. The app allows users to add and manage multiple stores, seamlessly collecting transaction information from authorized linked shops. With features such as automatic retrieval and export of transaction materials, Whaletapp simplifies the management of trading documents essential for foreign exchange declaration. Users benefit from the convenience of multi-store authorization management and the ability to quickly download and export order records. This tool is particularly valuable for businesses navigating the complexities of cross-border e-commerce transactions in compliance with Chinese foreign exchange policies.