No. cloudd syncs your data with iCloud.
It syncs app data with iCloud for Apple apps and third-party apps that use CloudKit: Notes, Reminders, Safari, Photos metadata and more.
cloudd and nsurlsessiond split iCloud's work: cloudd handles structured app data (records in CloudKit), while large files often travel through nsurlsessiond. If cloudd stays busy, check which app is syncing in System Settings › [your name] › iCloud and give it time on Wi-Fi with power connected.
Facts
- Owner
- Apple (part of macOS)
- Network-related
- Yes
- Typical ports
- 443
- Block it?
- Don’t block it
What it connects to
| Host | Country | Purpose |
|---|---|---|
| iCloud (CloudKit) servers | Various | App data sync |
Should you worry?
No. cloudd syncs your data with iCloud. Heavy use comes with first-time setup, big libraries or many changes.
Frequently asked questions
What is cloudd on a Mac?
The CloudKit daemon that syncs app data with iCloud for Apple and third-party apps.
Why is cloudd using so much CPU or network?
An app is syncing a lot of data with iCloud, often after setup or a big change. It finishes on its own.
Can I stop cloudd?
Turning off iCloud sync for specific apps in iCloud settings stops their syncing. cloudd itself is managed by macOS.