RxDB vs Xata
A detailed comparison to help you choose between RxDB and Xata.
Quick Verdict
3.9/5
RxDB
0 reviews
3.9/5
Xata
0 reviews
Both RxDB and Xata are equally rated at 3.9/5. 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. Xata is a managed Postgres platform built around copy-on-write branching and scale-to-zero compute, aimed at per-PR and per-agent database workflows. Vanilla PostgreSQL, open-source core (Apache 2.0), plus pgroll for zero-downtime migrations. The original search/spreadsheet product was retired during a 2024-2025 pivot.
RxDB Reactive database for JavaScript apps with real-time sync | Xata Postgres platform with copy-on-write branching and scale-to-zero | |
|---|---|---|
| Overview | ||
| Rating | 3.9 (0 reviews) | 3.9 (0 reviews) |
| Pricing model | freemium | pay-as-you-go |
| Starting price | Free tier available✓ | From $9/mo |
| Best for | JavaScript teams building offline-first, UI-reactive apps (PWAs, Electron, React Native) that may later sync with their own backend | Teams that need an isolated Postgres per pull request or per AI agent run, with branching and scale-to-zero economics rather than per-database pricing |
| Specifications (entry plan) | ||
| CPU cores | — | 2 vCPU |
| RAM | — | 1 GB |
| Storage | — | — |
| Bandwidth | — | — |
| SLA uptime | — | — |
| Data-center count | — | — |
| €/vCPU/mo | — | €4.50 |
| €/GB RAM/mo | — | €9.00 |
| Features | ||
| IPv6 | ||
| DDoS protection | ||
| Automated backups | ||
| Snapshots | ✓ | |
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ✓ | |
| Free tier | ✓ | |
| Data-center locations | ||
| Regions | — | US East (N. Virginia), GCP; EU Central (Frankfurt), GCP |
| Tags | ||
| Tags | free tieropen source | free tiermanaged optionbackups includedeu datacenterus datacenterapi access |
| Visit RxDB → | Visit Xata → | |
RxDB
Pros
- + Apache 2.0 core at $0 with replication, reactive queries and schema migration included
- + Pluggable storage engines keep one codebase across browser, Node, Electron and React Native
- + Mature project with a public changelog, 15,000+ commits and a documented replication protocol
- + Explicit conflict handling with revisions instead of silent last-write-wins
- + Tier pricing is published openly, including the exact free-tier limits
Cons
- - Paid tiers jump straight to $99/month billed annually with nothing in between
- - Free tier caps at 13 open collections; trial SQLite storage is evaluation-only at 500 documents
- - RxJS-shaped API carries a learning curve for teams new to observables
- - Effectively a one-primary-maintainer project with no support org behind the free tier
- - Sync backend is bring-your-own; there is no managed hosting or SLA on standard tiers
Xata
Pros
- + Instant copy-on-write branching with no per-branch, per-developer or per-database fees
- + Scale-to-zero: idle branches bill $0 compute and wake in about a second
- + Vanilla PostgreSQL — standard extensions, drivers and tooling, no fork
- + Public pricing is unusually transparent, including a machine-readable pricing.md
- + Open-source core (Apache 2.0) plus genuinely useful standalone tools: pgroll, pgstream
Cons
- - Young platform behind a company that already retired one product its customers relied on
- - No published uptime SLA or backup policy on the public site
- - Self-serve limited to two regions (US East, EU Central); deep compliance and support tiers are BYOC sales conversations
- - Key pieces (Xatastor, multi-tenant control plane) remain proprietary despite the open-source push
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