Google Calendar and Apple Calendar are complex services with native apps, web apps, and backend syncing capabilities that sync everything. While both are great calendar services, Google Calendar is more widely available across platforms, including Android, iOS, and iPadOS apps, as well as CalDav support for connecting to other calendar apps, including the Apple Calendar app. This allows users to manage their calendars across different devices with ease. In contrast, Apple Calendar has native apps on all Apple devices but has a more limited availability on non-Apple platforms. Both services are easy to use and offer similar features, such as adding new events, importing events, and viewing upcoming schedules. However, Google Calendar offers more advanced features and integrations, including integration with Zapier, scheduling video meetings over Google Meet or Zoom, and integrating with Gmail. Apple Calendar, on the other hand, is a nicer service on Apple devices, offering a streamlined experience and seamless integration with Siri and iCloud. Ultimately, the choice between Google Calendar and Apple Calendar depends on individual preferences and needs, but for most users, Google Calendar's wider availability and advanced features make it a more suitable option.