BovyTags is not meant to be a herd management system.  It is primarily used to collect RFIDs (EIDs) grouped into sessions. It does not keep records on individual animals (such as birth dates, repro events, etc).  It just matches EIDs to 

Once a session is completed and synced to the cloud, it is available to the Windows desktop BovyTags, where they can be viewed, shown on a map, or exported to a CSV file. for use in Excel or imported by your herd management software.