What is Numbers for iCloud?
Numbers for iCloud allows you to create and edit spreadsheets using a web browser.
You can share a spreadsheet with others by sending them a link to it. Recipients can use the link to view the spreadsheet, and you can also allow them to edit it so you can all work collaboratively in real time. Any changes you or others make to the spreadsheet are saved in iCloud, so everyone always sees the latest version.
Spreadsheets you create with Numbers for iCloud are automatically available in Numbers for iOS, iPadOS, and Mac on all your devices set up to use iCloud. This integration works in both directions. For example, you can create a Numbers spreadsheet on an iOS device, iPadOS device, or Mac, and it appears automatically on iCloud.com in Numbers for iCloud. That means you can edit spreadsheets from anywhere—your devices, computers, or on iCloud.com—and the changes show up everywhere.
When working with Numbers for iCloud, make sure you use a recommended web browser. See the Apple Support article System requirements for iCloud.