Both Downloads and Publication (Openings) are key ePaper metrics. The Download is triggered every time a user opens a publication for the first time. Once the Download starts, the event will trigger. If the user opens the same newspaper again, it will not be downloaded. The only way to create a new download is if a previously unseen publication is opened or the user manually deletes the publication and downloads it again.
A Publication (Opening) is different from the download event. It triggers every time a publication is opened. If you read the same newspaper three times in one day, you will create three Publication (Openings) but only one download.
Together these metrics provide a solid foundation for understanding how the users are using the applications.
You can create Custom Reports to retrieve both metrics by following the guides in these links.