The difference between grid and swipable is the way the pages will be displayed on the main dashboard (those images are actually the cover of a specific learning page inside the module).
With the grid view, you will have all images next to each other:
With the swipable, you are able to swipe in order to check all images:
The swipable mode is more user friendly when it comes to mobile phones. Therefore, also keep that in mind when choosing what is more appropriate for your app.
If you still have questions after reading this article, don't hesitate to contact us by submitting a ticket.
We're always happy to help ! :)