Rated 4 out of 5 stars

Great Addon, helped me a lot while refactoring thousands of contacts I've collected through years. It would be great always to see all fields even they werr ignored when comparing so it would be easier to understand the differences between two contact entries when all compared fields might be the same.

As written in the documentation:
It has been a deliberate decision not to show all fields by default for the sake of better overview when comparing.
The most usual and important fields are always shown.
There is a list of field types that are always hidden, which is pre-configured with those rather obscure technical fields rather anyone would like to see, and which you have the freedom to adapt.
The remaining types of fields are shown whenever there is a difference in their values.
So you should not really miss anything.