DACPAC support is in beta.
You can use SQL Compare to compare data-tier application packages (DACPACs).
To specify a DACPAC as a data source:
Specify the folder you want the files in the DACPAC to be unpacked to, and click Unpack:
DACPACs contain a model.sql file. This is a creation script for all the database objects in the package. SQL Compare uses it when you compare a DACPAC.
Select Scripts folder, and browse to the folder you unpacked the DACPAC to:
When you specify a DACPAC folder, SQL Compare displays a warning: 'Scripts folder found with missing metadata file'. This is a known issue with the beta DACPAC support, and can be ignored.
If you have any problems using DACPACs with SQL Compare, contact Red Gate support.