A Swift library that automatically syncs Realm Database with Apple CloudKit for seamless offline-first data synchronization across Apple devices.
IceCream is a Swift library that synchronizes Realm Database with Apple CloudKit, enabling automatic data syncing across Apple devices. It solves the problem of keeping local Realm databases in sync with iCloud while maintaining offline-first capabilities and reactive programming patterns. The library handles complex scenarios like relationship syncing, large file transfers, and delta updates automatically.
iOS/macOS/tvOS/watchOS developers building offline-capable applications that need seamless data synchronization across devices using Realm and CloudKit. Particularly useful for developers who want to avoid writing complex sync logic themselves.
Developers choose IceCream because it provides a simple, automatic synchronization solution between Realm and CloudKit with minimal code. Unlike manual implementations, it handles complex edge cases like relationships, asset syncing, and soft deletions out of the box while maintaining Realm's performance benefits.
Sync Realm Database with CloudKit
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IceCream abstracts away complex sync logic by automatically pushing Realm changes to CloudKit with minimal code, as emphasized in its 'works like magic' philosophy.
It handles Realm relationships including to-one and to-many associations out of the box, which simplifies syncing interconnected data models.
Uses CreamAsset to sync files over Realm's 16MB limit by storing them locally and uploading as CKAssets, optimizing for media and large data.
Seamlessly works across iOS, macOS, tvOS, and watchOS, leveraging native Apple frameworks for consistent sync experiences.
The README explicitly lists 'Complete Documentation' as an unchecked feature, which can slow onboarding and increase debugging time for complex issues.
Tightly coupled with Realm and CloudKit, making migration difficult and limiting flexibility if you need to switch databases or cloud services.
Requires enabling iCloud capabilities, background modes, and remote notifications in Xcode, adding initial configuration complexity beyond simple integration.