What is iCloud Reminders?
You can create and manage to-do items and organize them into lists using Reminders on iCloud.com. You can also share reminder lists with other iCloud users.
Changes you make to reminders and reminder lists on iCloud.com automatically appear on your iPhone, iPad, iPod touch, and Mac when those devices have iCloud Reminders turned on. If you’re not using upgraded reminders, you can also see your reminders on a Windows computer if Tasks is turned on.
Reminders also appear in Notification Center on your iPhone, iPad, iPod touch, and Mac.
If you don’t see Reminders on iCloud.com, your account just has access to iCloud web-only features. To gain access to iCloud Reminders and other iCloud features, set up iCloud on your iPhone, iPad, iPod touch, or Mac.
If you’re using another iCloud feature, tap the feature’s name at the top of the iCloud.com window, then tap Reminders.
Note: If you’ve upgraded your iCloud Reminders account, you can see your reminders on iCloud.com and any device with iOS 13, iPadOS, or macOS Catalina 10.15.