Users can optionally set notifications, with options for type (email, mobile push notification) and time.Locations can be added for easy understanding of an event's place.Events are viewable in different types of setups, including day, week, month, or schedule.Users can add a color to an event for recognition or to distinguish the event from others.Users can enable a 'Recurring' functionality with optional parameters for frequency.Events have a set start time and stop time, with an option for an 'All-day event'.

Google Calendar allows users to create and edit events.The integration between Google Calendar and Gmail was praised, however, with critics writing that 'all of the relevant details are there'. The Smart Suggestions feature was also liked and disliked, with varying levels of success in the app actually managing to suggest relevant information upon event creation. While some critics praised the design for being 'cleaner', 'bold' and making use of 'colorful graphics', other reviewers asserted that the graphics took up too much space. 2015 reviews of the Android and iOS apps both praised and criticized the design. Google Calendar's mobile apps have received polarized reviews. Over time, Google has added functionality that makes use of machine learning, including 'Events from Gmail', where event information from a user's Gmail messages are automatically added to Google Calendar 'Reminders', where users add to-do activities that can be automatically updated with new information 'Smart Suggestions', where the app recommends titles, contacts, and locations when creating events and 'Goals', where users enter information on a specified personal goal, and the app automatically schedules the activity at optimal times. Users can enable or disable the visibility of special calendars, including Birthdays, where the app retrieves dates of births from Google contacts and displays birthday cards on a yearly basis, and Holidays, a country-specific calendar that displays dates of special occasions. Event locations can also be added, and other users can be invited to events.

Reminders can be enabled for events, with options available for type and time. Google Calendar allows users to create and edit events.

It became available in beta release April 13, 2006, and in general release in July 2009, on the web and as mobile apps for the Android and iOS platforms. Google Calendar is a time-management and scheduling calendar service developed by Google.

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