You never have to worry about losing a single calculation, either-Google Sheets saves everything in Google Drive, making a crashed computer of no concern to your important data.
It's also hosted in the cloud and runs in a web browser, so it's platform independent and can be run on Windows, macOS, and Linux systems. Google Sheets is Google's cloud-based answer to Microsoft Excel, and it's capable of doing the vast majority of what the average Excel user needs.
