axiom-realm-migration-ref

Guide migrating applications from Realm to SwiftData for iOS 17+.

Updated Dec 3, 2025

Search Tags:#database #migration #ios development #swiftdata #cloudkit #realm #swift concurrency

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npx skills add https://github.com/tuliopc23/flying-dutchman-app --skill axiom-realm-migration-ref

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Please help me install this Agent Skill.
Skill: axiom-realm-migration-ref
Source: https://github.com/tuliopc23/flying-dutchman-app/tree/main/.claude/skills/axiom-realm-migration-ref
Command: npx skills add https://github.com/tuliopc23/flying-dutchman-app --skill axiom-realm-migration-ref

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides a comprehensive guide to migrating applications from Realm to SwiftData, addressing the critical need to transition before Realm Device Sync sunsets.

Core Features & Use Cases

Migration Strategy: Outlines a phased approach from preparation to production rollout.
Pattern Equivalents: Details how to convert Realm models, relationships, and indexes to SwiftData.
Threading Model Conversion: Explains the shift from manual Realm threading to Swift Concurrency.
Schema Migration: Offers strategies for both simple and complex schema transformations.
CloudKit Transition: Guides users on migrating from Realm Sync to SwiftData's CloudKit integration.
Real-World Scenarios: Provides tailored migration plans for small, medium, and large applications.
Testing & Troubleshooting: Includes checklists, common issues, and success criteria.

Quick Start

Use the axiom-realm-migration-ref skill to get a detailed guide on migrating your app from Realm to SwiftData.

Frequently Asked Questions about axiom-realm-migration-ref

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I migrate my iOS app from Realm to SwiftData?▼

Migrate from Realm to SwiftData using a phased strategy covering model conversion, threading model updates, schema migration, and CloudKit sync transition for iOS 17+ applications.

When do I need to migrate from Realm Device Sync to CloudKit?▼

You need to migrate from Realm Device Sync to CloudKit when transitioning to SwiftData, specifically to prepare for the Realm Device Sync sunset and maintain cloud synchronization.

How does Realm threading conversion work with Swift Concurrency?▼

Realm threading conversion replaces manual thread management with Swift Concurrency patterns, adapting your app's background tasks and data access logic to SwiftData's actor-isolated context model.

Can I use this migration guide for large applications with complex schemas?▼

Yes, the guide provides tailored migration plans and schema migration strategies for small, medium, and large applications, addressing both simple and complex schema transformations.

What is the best way to convert Realm models to SwiftData?▼

The best way to convert Realm models to SwiftData is by mapping pattern equivalents, which details how to translate Realm models, relationships, and indexes directly into SwiftData schemas.

What are common issues when migrating from Realm to SwiftData?▼

Common issues during Realm to SwiftData migration include schema transformation errors and threading conflicts; the guide provides testing checklists, troubleshooting steps, and success criteria.