This document discusses using Google Sheets to automatically report on daily CiviCRM event registration comparisons. It describes using CiviReport and scheduled jobs to generate reports from CiviCRM and send them via email in CSV format to Google Sheets. This allows comparing CiviEvent registrations for annual events on a daily basis in Google Sheets. It introduces CiviService, a CiviCRM library for Google Apps Script that enables building a CiviCRM add-on for Google Sheets.