Wagtail Download Counter
Wagtail Download Counter is an add-on for Wagtail CMS that keeps track of the number of times a document has been downloaded and shows the count in the Wagtail admin interface.
In your settings file add the following:
INSTALLED_APPS = [ ... 'downloadcounter', ... ]
Make sure you add
wagtail.wagtaildocs in the installed apps.
Run migrations and you're set.