AWS Amplify DataStore vs ObjectBox

AWS Amplify DataStore9.0Visit ObjectBox8.5Visit

Higher score AWS Amplify DataStore #3 in Mobile Databases 9.0/10 Open source ✓ 1 of 1 features Visit AWS Amplify

vs

ObjectBox #7 in Mobile Databases 8.5/10 Free plan Free plan✓ 0 of 1 features Visit ObjectBox

• AWS Amplify DataStore fits best

  Cross-platform apps needing cloud sync

• ObjectBox fits best

  Cross-platform apps needing local sync and vectors

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	AWS Amplify DataStore 9.0/10 Visit ↗	ObjectBox 8.5/10 Visit ↗
At a glance
Editor score	9.0	8.5
Ranking	#3 in Mobile Databases	#7 in Mobile Databases
Best for	Cross-platform apps needing cloud sync	Cross-platform apps needing local sync and vectors
Pricing model	Free	Free plan + paid
Starting price	Open source	Free plan
Free plan	Not checked yet	✓ (best)
Free trial	—	—
Deployment	Cloud, Mobile	Cloud, Self-hosted, Desktop, Mobile
Platforms	Web, iOS, Android	Windows, macOS, Linux, iOS, Android
Support	Tickets, Community, Docs	Email, Community, Docs
Integrations	4 integrations	1 integrations
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features AWS Amplify DataStore 1/1 · ObjectBox 0/1
Offline mode	✓ (best)	Not checked yet
Specs
Data synchronization	Bidirectional	Not checked yet
Mobile platforms	iOS, Android, React Native, Flutter	Not checked yet
Conflict resolution	Automatic	Not checked yet
SDK languages	JavaScript, Swift, Java, Dart	Not checked yet
Monthly sync limit	Not checked yet	Not checked yet
Our review
Pros	Offline-first reads and writes with persistent on-device storage Bidirectional GraphQL synchronization through AWS AppSync Automatic conflict handling with built-in and custom strategies	Offline-first persistence with bidirectional synchronization On-device vector search alongside reactive queries and transactions Native APIs across mobile, desktop, and server environments
Cons	Cloud synchronization depends on an AWS AppSync backend Its ecosystem centers on AWS services and GraphQL Conflict behavior may require choosing or creating a resolution strategy	ObjectBox Sync is priced by project and usage The default C/C++ database limit is 1 GB Its integration list includes MongoDB rather than a broad ecosystem
Our verdict	AWS Amplify DataStore is a developer library for persisting application data locally and synchronizing it with an AWS AppSync GraphQL backend. It is intended for cross-platform applications spanning web, iOS, and Android, with… Read the review →	ObjectBox is an embedded, object-oriented database for mobile, IoT, edge, desktop, and server applications. It is designed for applications that need local data persistence, offline-first operation, and optional synchronization across… Read the review →

Strengths and trade-offs

• AWS Amplify DataStore — where it wins

  • Offline-first reads and writes with persistent on-device storage
  • Bidirectional GraphQL synchronization through AWS AppSync
  • Automatic conflict handling with built-in and custom strategies

  Where it doesn't

  • Cloud synchronization depends on an AWS AppSync backend
  • Its ecosystem centers on AWS services and GraphQL
  • Conflict behavior may require choosing or creating a resolution strategy

• ObjectBox — where it wins

  • Offline-first persistence with bidirectional synchronization
  • On-device vector search alongside reactive queries and transactions
  • Native APIs across mobile, desktop, and server environments

  Where it doesn't

  • ObjectBox Sync is priced by project and usage
  • The default C/C++ database limit is 1 GB
  • Its integration list includes MongoDB rather than a broad ecosystem

• AWS Amplify DataStore9.0/10 · Open source

  A focused choice for cross-platform apps that need offline data and AppSync sync.

  Visit AWS AmplifyFull verdict →
• ObjectBox8.5/10 · Free plan

  A flexible local-first database for cross-platform apps that need sync and on-device vectors.

  Visit ObjectBoxFull verdict →