SwiftData vs Core Data: 2026 Persistence Comparison

SwiftData is Apple's modern, Swift-first persistence framework built on top of Core Data. Core Data remains the underlying engine and is still fully supported.

SwiftData vs Core Data — Feature Comparison

Feature	SwiftData	Core Data
API style	Swift macros (@Model)	NSManagedObject subclassing
Boilerplate	Near zero	High
iOS support	iOS 17+	iOS 3+
CloudKit sync	Built-in	Built-in
Migration story	Schema versioning APIs	Mature, well-documented

Verdict

SwiftData for any new project targeting iOS 17+. Stay on Core Data only if you need iOS 16 support or have heavy custom NSManagedObject subclasses.

Choose SwiftData if

• New apps on iOS 17+
• SwiftUI-first codebases
• Teams that want minimal boilerplate

Choose Core Data if

• iOS 16 and earlier targets
• Complex existing Core Data stacks

Frequently Asked Questions

Is SwiftData production-ready?

Yes for iOS 17+. Early bugs were resolved in iOS 17.2 and the API stabilized in iOS 18.

Can SwiftData and Core Data coexist?

Yes. SwiftData is built on Core Data; you can access the underlying store from both APIs.