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CloudKit

CloudKit stores app data in iCloud and keeps it synchronized across devices and the web.

Place
#15 of 26
Score
6.4
CloudKit's website

What CloudKit is

CloudKit stores app data in iCloud and keeps it synchronized across devices and the web. Developers organize data into containers with public, private, and shared databases, and can use bidirectional syncing with custom conflict resolution. Its APIs cover iOS, macOS, and web, with SDK languages including Swift, Objective-C, and JavaScript. Apple Developer Program membership includes up to 1PB of free storage for each app. CloudKit Console supports container and schema management, test-data inspection, and review of telemetry, logs, and alerts. Developers can configure private-database fields for encryption in storage and in transit to their application. The service separates sandbox development from production, where schema changes must remain forward-compatible. Automation supports integration tests from Xcode or a CI system, and CKTool JS can be embedded in developer tools. A free plan is available; pricing is from $99/yr. Incoming traffic is subject to limits and controls that may change over time.

Good

  • Up to 1PB of free storage per app with membership.
  • Supports public, private, and shared databases.
  • Syncs across Apple platforms and the web.
  • Console includes telemetry, logs, and alerts.
  • Supports custom conflict resolution.

Watch out

  • Offline mode is not available.
  • Incoming traffic is subject to changeable limits and controls.
  • Production schema changes must be forward-compatible.

Who it suits

CloudKit suits developers building apps that store structured app and user data in iCloud. It also fits teams that need synchronization across Apple platforms and the web.

Verdict

CloudKit combines iCloud storage, cross-platform synchronization, and tools for managing app data. Developers should account for traffic controls and production schema constraints when planning an implementation.

Plans and prices

From CloudKit's own pricing page, checked 7 Oct 2026.

All about pricing
PlanPriceWhat it gives you
CloudKitFreeUp to 1PB of free storage for each app

The facts

Each one read from CloudKit's own pages, with the date it was checked.

What it does

Access controls
CloudKit uses role-based access control for public databases, with World, Authenticated, and Creator roles.checked 7 Oct 2026
Console
CloudKit Console lets developers manage containers and schemas, inspect test data, and view telemetry, logs, and alerts.checked 7 Oct 2026
Data model
CloudKit organizes app data into containers with public, private, and shared databases.checked 7 Oct 2026
Development environments
CloudKit provides separate sandbox development and production environments, and production schemas can only be modified in a forward-compatible manner.checked 7 Oct 2026
Integrations
CloudKit automation supports integration tests from Xcode or a CI system, and CKTool JS can be embedded in developer tools.checked 7 Oct 2026
Limit
CloudKit throttles incoming traffic using limits and controls that can change over time.checked 7 Oct 2026
Privacy
Apple says developers can develop, analyze, and debug apps without exposing users’ personally identifiable data.checked 7 Oct 2026
Security
Developers can configure fields in private CloudKit databases to be encrypted in storage and in transit to their application.checked 7 Oct 2026
Storage
Apple says Apple Developer Program membership includes up to 1PB of free storage for each app.checked 7 Oct 2026
Syncing
Automatic syncing is supported across iOS, iPadOS, macOS, tvOS, watchOS, visionOS, and the web.checked 7 Oct 2026
Web support
Apple lists CloudKit syncing across the web and provides CloudKit JS for adding CloudKit support to web apps.checked 7 Oct 2026
What it does
CloudKit stores app data in iCloud and keeps it up to date across devices and on the web.checked 7 Oct 2026
Who it is for
CloudKit is for developers building apps that store structured app and user data in iCloud.checked 7 Oct 2026

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