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Can Swift packages do cloud sync?

also known as: icloud sync · cloudkit sync · remote sync

Built into the OS — no dependency

Apple framework	iOS	macOS	watchOS	tvOS	visionOS	Linux	Catalyst
CloudKit built in as of Xcode 26.6 Details CloudKit record sync; CKSyncEngine is the modern sync channel.	✓ serves it · confidence 0.90 · as of Xcode 26.6 `CKSyncEngine` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs → `CKDatabase` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `CKSyncEngine` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs → `CKDatabase` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `CKSyncEngine` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs → `CKDatabase` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `CKSyncEngine` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs → `CKDatabase` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `CKSyncEngine` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs → `CKDatabase` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✕ not served here · confidence 0.90 · as of Xcode 26.6 `CKSyncEngine` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `CKSyncEngine` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs → `CKDatabase` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →
CoreData built in as of Xcode 26.6 Details CloudKit mirroring via NSPersistentCloudKitContainer.	✓ serves it · confidence 0.90 · as of Xcode 26.6 `NSPersistentCloudKitContainer` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `NSPersistentCloudKitContainer` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `NSPersistentCloudKitContainer` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `NSPersistentCloudKitContainer` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `NSPersistentCloudKitContainer` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✕ not served here · confidence 0.90 · as of Xcode 26.6 `NSPersistentCloudKitContainer` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `NSPersistentCloudKitContainer` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →
SwiftData built in as of Xcode 26.6 Details CloudKit-backed sync via ModelConfiguration.CloudKitDatabase.	✓ serves it · confidence 0.90 · as of Xcode 26.6 `ModelConfiguration.CloudKitDatabase` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `ModelConfiguration.CloudKitDatabase` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `ModelConfiguration.CloudKitDatabase` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `ModelConfiguration.CloudKitDatabase` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `ModelConfiguration.CloudKitDatabase` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✕ not served here · confidence 0.90 · as of Xcode 26.6 `ModelConfiguration.CloudKitDatabase` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →	✓ serves it · confidence 0.90 · as of Xcode 26.6 `ModelConfiguration.CloudKitDatabase` Apple SDK symbol graph · Xcode 26.6 View in Apple Docs →

Package	iOS	macOS	watchOS	tvOS	visionOS	Linux	Catalyst
defaults as of 9.0.9 Details	✓ serves it · confidence 0.85 · as of 9.0.9 `Defaults.iCloud` Sources/Defaults/Defaults+iCloud.swift:58 View the line on GitHub → Synchronize values across devices using iCloud; no per-platform gaps recorded. `Defaults.iCloud.add` Sources/Defaults/Defaults+iCloud.swift:87 View the line on GitHub → Add keys to be automatically synced. `Defaults.iCloud.waitForSyncCompletion` Sources/Defaults/Defaults+iCloud.swift:138 View the line on GitHub → Await completion of synchronization.	✓ serves it · confidence 0.85 · as of 9.0.9 `Defaults.iCloud` Sources/Defaults/Defaults+iCloud.swift:58 View the line on GitHub → Synchronize values across devices using iCloud; no per-platform gaps recorded. `Defaults.iCloud.add` Sources/Defaults/Defaults+iCloud.swift:87 View the line on GitHub → Add keys to be automatically synced. `Defaults.iCloud.waitForSyncCompletion` Sources/Defaults/Defaults+iCloud.swift:138 View the line on GitHub → Await completion of synchronization.	✓ serves it · confidence 0.85 · as of 9.0.9 `Defaults.iCloud` Sources/Defaults/Defaults+iCloud.swift:58 View the line on GitHub → Synchronize values across devices using iCloud; no per-platform gaps recorded. Manifest floor watchOS 9 matches NSUbiquitousKeyValueStore availability. `Defaults.iCloud.add` Sources/Defaults/Defaults+iCloud.swift:87 View the line on GitHub → Add keys to be automatically synced. `Defaults.iCloud.waitForSyncCompletion` Sources/Defaults/Defaults+iCloud.swift:138 View the line on GitHub → Await completion of synchronization.	✓ serves it · confidence 0.85 · as of 9.0.9 `Defaults.iCloud` Sources/Defaults/Defaults+iCloud.swift:58 View the line on GitHub → Synchronize values across devices using iCloud; no per-platform gaps recorded. `Defaults.iCloud.add` Sources/Defaults/Defaults+iCloud.swift:87 View the line on GitHub → Add keys to be automatically synced. `Defaults.iCloud.waitForSyncCompletion` Sources/Defaults/Defaults+iCloud.swift:138 View the line on GitHub → Await completion of synchronization.	✓ serves it · confidence 0.85 · as of 9.0.9 `Defaults.iCloud` Sources/Defaults/Defaults+iCloud.swift:58 View the line on GitHub → Synchronize values across devices using iCloud; no per-platform gaps recorded. `Defaults.iCloud.add` Sources/Defaults/Defaults+iCloud.swift:87 View the line on GitHub → Add keys to be automatically synced. `Defaults.iCloud.waitForSyncCompletion` Sources/Defaults/Defaults+iCloud.swift:138 View the line on GitHub → Await completion of synchronization.	? not verified yet · confidence 0.15 · as of 9.0.9 Package.swift:7 View the line on GitHub → Manifest lists Apple platforms only (not absence evidence). Digest records no os() gaps, so unsupported cannot be claimed; iCloud sync is built on NSUbiquitousKeyValueStore and the file imports Combine/OSLog/UIKit-or-AppKit, making linux presence unverified and very doubtful. readme.md:0 View the line on GitHub → README Compatibility section lists macOS/iOS/tvOS/watchOS/visionOS only; linux never mentioned.	✓ serves it · confidence 0.75 · as of 9.0.9 `Defaults.iCloud` Sources/Defaults/Defaults+iCloud.swift:58 View the line on GitHub → No macCatalyst gap recorded in surface digest; decl resolves present. `Defaults.iCloud.add` Sources/Defaults/Defaults+iCloud.swift:87 View the line on GitHub → No macCatalyst gap recorded in surface digest; decl resolves present. Package.swift:7 View the line on GitHub → No explicit macCatalyst floor; Catalyst inherits the .iOS(.v14) floor by SwiftPM default. Confidence lowered accordingly.

✓ serves it · ◐ with conditions · ✕ not served (proven) · ? not verified yet — hover any verdict for the receipt, click to pin it