Syncing Mac and iOS versions
To start working with project files on Mac make sure iCloud is enabled on Mac: go to System Preferences ▸ iCloud ▸ iCloud Drive ▸ Options... ▸ Documents ▸ enable Project Office option.
To share projects to your iOS device after finishing up with your project, choose "iCloud Drive" folder when saving a new project on your Mac.
Note: At simultaneous work on several devices, the program reports about changes and proposes to save one or more project files. You can save either one of selected files, or keep all at once.