There are some differences in the functionalities between the Aion mobile application and the Aion web application.
When it comes to transfers that you would like to perform, there is no difference, as all the functionalities can be performed on both the website and the mobile application.
When it comes to managing your card, there are only two functionalities that are not possible on the Web version of Aion: Show your card details and Order a physical card. These two actions always need to be performed on the Aion Mobile Application. All other functionalities, however, such as changing your limits, are available on both the website and the app.