RxDB vs Neon
A detailed comparison to help you choose between RxDB and Neon.
RxDB Reactive database for JavaScript apps with real-time sync | Neon Serverless Postgres with branching and scale-to-zero | |
|---|---|---|
| Overview | ||
| Rating | 3.9 (336 reviews) | 4.6 (305 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. | Developers using Next.js or serverless frameworks who want Postgres with branching at zero idle cost |
| Specifications (entry plan) | ||
| CPU cores | — | 0 vCPU |
| RAM | — | 0 GB |
| Storage | — | 0 GB |
| Bandwidth | — | 0 TB/mo |
| SLA uptime | — | 99.9% |
| Data-center count | — | 8 |
| Features | ||
| IPv6 | ||
| DDoS protection | ||
| Automated backups | ✓ | |
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ✓ | |
| Free tier | ✓ | |
| Data-center locations | ||
| Regions | — | United StatesEuropean Union |
| Tags | ||
| Tags | free tieropen source | free tiermanaged optionbackups includedeu datacenterus datacenterapi accessopen source |
| Visit RxDB → | Visit Neon → | |
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
Neon
Pros
- + Scale-to-zero — no charges for idle databases
- + Database branching for preview environments
- + Generous free tier — 10 projects
Cons
- - Cold start latency when scaled to zero
- - Less mature than managed RDS for mission-critical
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