A system and related method for the interaction of a user with a plurality of e-commerce shops are provided. The method includes the steps of installing on a first e-commerce shop a first API module, installing on a second e-commerce shop a second API module, providing a mobile application having a pre-build template with a set of pre-defined fields, receiving by the system from the user, a selection of the first e-commerce shop or the second e-commerce shop, and populating and dynamically updating the pre-built template's fields with data associated with the shop selected by the user, using a corresponding API module.