Is it possible to easily add photos from a smartphone?

Yes.

You can upload photos from your smartphone to Daminion Cloud (or Daminion Local installed on a web server).

Another way is to configure the Daminion Auto-Import folder using Dropbox/OneDrive/GDrive.
Please check out this article for more information.

The native Daminion mobile app is under development now. You can subscribe to our Release Notes to be notified of its release via our newsletter.