Sometimes, I see contacts beeing synced which I did not purposely change myself. I guess, this is related to a the mixture of Android/iOS/Win7 and how they handle the gmail Contacts.
I am always worried, that something could be wrong, especially because I do not see WHAT "Go Contact Sync Mod" is changing.... I only see that a ceratain contact has been synced. I would prefer to see "Contact A, private phone synched from 555 to 666". Additionally I would like to see my sync hstory stored in a text file.
Currently we don't check any single field, we just update the whole contact, it will be very effortous to check field and log every changed field. You can find a log file already there: C:\Users\Flo\AppData\Roaming\GoContactSyncMOD, but the detail is the same as in the log window (only the contact name, not the changed field is logged)