You can try copyThing and all it's features without a license key.
Within this universe it's the truth that no one pays for software if there isn't a limitation, so there is one. 🙄 Around half the media files will be skipped during the transfer. Because of copyThing's "no duplicates"-nature it will seamlessly transfer every missing item after buying a license key. 🙂 Skipped items will be marked blue, so you can see what exactly is skipped intentionally.
To open copyThing, right-click it in the Finder and chose "Open" from the context menu. You will have to do this only once.
Otherwise you will get this message:
- copyThing runs on Apple computers with macOS, from version 10.7.x up to 10.14.x.
- Any iPhone, iPad, iPod. Including the very first iPod, including Windows-formatted iPods.
- Optional: iTunes, version 9.2.1 or higher. You may use copyThing without iTunes, if you wish to copy media files to your hard drive only (no duplicate recognition in that case).