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.
Your spreadsheets in iCloud are also available in Numbers for iOS, iPadOS, and Mac, if you set up iCloud on your iPhone, iPad, iPod touch, or Mac.
When working with Numbers for iCloud, make sure you use a recommended web browser. See the Apple Support article System requirements for iCloud.