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Apple CloudKit vs Google Cloud Firestore

Apple CloudKit: Apple's iCloud record store for apps: private per-user data, a public database and built-in sync. Google Cloud Firestore: Serverless document database with realtime listeners, offline SDKs and a new Enterprise edition.

key differences

  • Transactions: Apple CloudKit offers limited ACID; Google Cloud Firestore offers full.
  • Only Apple CloudKit has change data capture.
  • Only Google Cloud Firestore has joins, full-text search, vector search, json, triggers.

choose apple-cloudkit for

  • +Syncing app data across a user's iPhone, iPad and Mac
  • +Indie and Apple-only apps that want a backend without servers
  • +Collaborative documents and lists shared between iCloud users
  • +Core Data or SwiftData apps that need cloud backup and sync

best at · Mobile/offline, OLTP, Content

choose google-cloud-firestore for

  • +Mobile and web apps built on Firebase
  • +Realtime collaborative features and chat
  • +User profiles and app state with offline support
  • +Serverless backends on Cloud Run or Cloud Functions

best at · OLTP, Mobile/offline, Content

Apple CloudKitApple's iCloud record store for apps: private per-user data, a public database and built-in sync.
Google Cloud FirestoreServerless document database with realtime listeners, offline SDKs and a new Enterprise edition.
overview
Primary model
Document
Document
Also supports
Key-Value
Vector, Spatial, Search Engine
Type
Managed service
Managed service
Status
Active
Active
Developer
Apple
Google
First release
2014
2017
Latest version
–
–
License
ProprietaryProprietary Apple service
ProprietaryProprietary Google Cloud service
Free tier
✓
✓
popularity
WhichDB Score
25.8
49.1
Rank
#116
#28
GitHub stars
–
–
Stack Overflow questions
2.4K
42.6K
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Large (≤ 1 PB)
Horizontal scaling
Native
Native
Multi-region
None
Active active
ACID
Limited
Full
Consistency
Eventual, Strong
Strong
Schema
Flexible
Schemaless
Architecture
Serverless, Distributed
Distributed, Serverless
deployment
Self-hosted
—
—
Vendor-managed cloud
✓
✓
Serverless
✓
✓
Embedded
—
—
Edge
—
—
Clouds
–
Google Cloud
capabilities
Transactions
✓
✓
Joins
—
✓
Secondary indexes
✓
✓
Full-text search
—
✓
Vector search
—
✓
Geospatial
✓
✓
JSON
—
✓
Change data capture
✓
—
Triggers
—
✓
Stored procedures
—
—
Materialized views
—
—
TTL / expiry
—
✓
Pub/Sub
✓
✓
Columnar storage
—
—
In-memory
—
—
Durable persistence
✓
✓
Compression
—
—
Encryption at rest
✓
✓
Role-based access
✓
✓
Time travel
—
✓
Branching
—
—
Online schema changes
✓
✓
Streaming ingest
—
—
Offline sync
✓
✓
Runs in WebAssembly
—
—
interfaces
Query languages
CKQuery (NSPredicate)
Firestore query API, Pipeline operations (Enterprise), MongoDB Query API (Enterprise)
Client languages
Swift, Objective-C, JavaScript
JavaScript, Swift, Kotlin, Java, Python, Go, C#, Dart
Best for
Mobile/offline, OLTP, Content
OLTP, Mobile/offline, Content, Vector search
Add more to this comparisonNot sure either fits? Try smart match

Apple CloudKit vs Google Cloud Firestore: FAQ

What is the difference between Apple CloudKit and Google Cloud Firestore?

Apple CloudKit: Apple's iCloud record store for apps: private per-user data, a public database and built-in sync. Google Cloud Firestore: Serverless document database with realtime listeners, offline SDKs and a new Enterprise edition. Transactions: Apple CloudKit offers limited ACID; Google Cloud Firestore offers full. Only Apple CloudKit has change data capture. Only Google Cloud Firestore has joins, full-text search, vector search, json, triggers.

When should I choose Apple CloudKit over Google Cloud Firestore?

Choose Apple CloudKit for syncing app data across a user's iPhone, iPad and Mac; indie and Apple-only apps that want a backend without servers; and collaborative documents and lists shared between iCloud users. Choose Google Cloud Firestore for mobile and web apps built on Firebase; realtime collaborative features and chat; and user profiles and app state with offline support.

Is Apple CloudKit or Google Cloud Firestore more popular?

Google Cloud Firestore ranks #28 on the WhichDB Score (49.1/100) and Apple CloudKit ranks #116 (25.8/100). Popularity is not fit: check the requirements that matter for your project.

Are Apple CloudKit and Google Cloud Firestore open source?

No. Apple CloudKit is proprietary, closed-source software. No. Google Cloud Firestore is proprietary, closed-source software.