RxDB vs Fauna
A detailed comparison to help you choose between RxDB and Fauna.
Quick Verdict
3.9/5
RxDB
336 reviews
3.8/5
Fauna
339 reviews
RxDB is rated higher (3.9 vs 3.8). RxDB is a real-time, offline-first NoSQL database for JavaScript applications. Works in the browser, Node.js, React Native, and Electron. Syncs with CouchDB, Firestore, and others. Fauna is a serverless document database with ACID transactions, native GraphQL API, and global replication. No servers to manage. Unique multi-tenancy model. Ideal for Jamstack and serverless apps.
RxDB Reactive database for JavaScript apps with real-time sync | Fauna Serverless document database with ACID transactions | |
|---|---|---|
| Overview | ||
| Rating | 3.9 (336 reviews)✓ | 3.8 (339 reviews) |
| Pricing model | free | freemium |
| Starting price | Free | Free tier available |
| Best for | JavaScript/TypeScript developers building offline-capable apps requiring real-time data reactivity across multiple browser contexts. | Jamstack developers who need a serverless database with GraphQL API and automatic global replication |
| Tags | ||
| Tags | free tieropen source | free tierapi access |
| Visit RxDB → | Visit Fauna → | |
RxDB
Pros
- + Build reactive queries with RxJS observables for live data updates
- + Sync data across tabs, devices, and optional cloud backend
- + Work completely offline with automatic conflict resolution
- + Use multiple storage engines via plugins for different environments
Cons
- - Steeper learning curve for developers unfamiliar with RxJS reactive patterns
- - Self-hosted sync server setup required for cross-device features
Fauna
Pros
- + Serverless — no scaling needed
- + GraphQL API native
- + ACID transactions across global regions
Cons
- - Proprietary FQL query language
- - Pricing can surprise at scale
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