Moving files between iPad and Mac

Updated for macOS Catalina / iPadOS 13 :

1. Connect your iPad Pro and the Mac using the cable.
2. Using Finder, select your iPad from the list of available devices
3. Select the narnar icon.
4. Select Files tab.
5. Drag and drop files between your Mac and iPad.

The narnar app supports iTunes File Sharing (prior to macOS Catalina).

1. ​Connect your iPad Pro using the Lightning cable.
2. On the Mac, open iTunes.
3. Select the connected mobile device (a small iPhone icon).
4. From the menu on the left, select "File Sharing".
5. Select the narnar icon.
6. Use the "narnar Documents" window to drag and drop files between your Mac and iPad.