Fauna vs RxDB
A detailed comparison to help you choose between Fauna and RxDB.
Quick Verdict
3.8/5
Fauna
339 reviews
3.9/5
RxDB
336 reviews
RxDB is rated higher (3.9 vs 3.8). 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 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 Serverless document database with ACID transactions | RxDB Reactive database for JavaScript apps with real-time sync | |
|---|---|---|
| Overview | ||
| Rating | 3.8 (339 reviews) | 3.9 (336 reviews)✓ |
| Pricing model | freemium | free |
| Starting price | Free tier available | Free |
| Best for | Jamstack developers who need a serverless database with GraphQL API and automatic global replication | JavaScript/TypeScript developers building offline-capable apps requiring real-time data reactivity across multiple browser contexts. |
| Tags | ||
| Tags | free tierapi access | free tieropen source |
| Visit Fauna → | Visit RxDB → | |
Fauna
Pros
- + Serverless — no scaling needed
- + GraphQL API native
- + ACID transactions across global regions
Cons
- - Proprietary FQL query language
- - Pricing can surprise at scale
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
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