Note that the following comparison may be performed with the Demo version of iFamily for Tiger which is a free download.
- Load each Gedcom file into a separate iFamily database using File -> Gedcom Load
- Open one of the databases in iFamily using File -> Open Recent
- Use menu option File -> Compare and Merge -> Compare and Merge from Another Database...
- Select the other database on the LH side of the dialog
- Press Auto Compare All
- The report of the differences will be displayed in Text Edit