RxDB vs SingleStore
A detailed comparison to help you choose between RxDB and SingleStore.
Quick Verdict
3.9/5
RxDB
0 reviews
3.8/5
SingleStore
0 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. SingleStore (formerly MemSQL) is a cloud-native database combining OLTP and OLAP in a single system. Handles real-time analytics and transactions without ETL. Used by financial services and gaming companies.
RxDB Reactive database for JavaScript apps with real-time sync | SingleStore Real-time analytics and transactions in one database | |
|---|---|---|
| Overview | ||
| Rating | 3.9 (0 reviews)✓ | 3.8 (0 reviews) |
| Pricing model | freemium | usage-based |
| Starting price | Free tier available | Free tier available |
| Best for | JavaScript teams building offline-first, UI-reactive apps (PWAs, Electron, React Native) that may later sync with their own backend | Teams with genuinely mixed transactional and analytical workloads — fraud, risk, adtech, IoT, live gaming — that need sub-second freshness and want to retire a separate warehouse and sync pipeline. |
| Features | ||
| IPv6 | ||
| DDoS protection | ||
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ||
| Tags | ||
| Tags | free tieropen source | free tiermanaged optioneu datacenterus datacenterapi access |
| Visit RxDB → | Visit SingleStore → | |
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
SingleStore
Pros
- + Transactions and analytics in one engine — no ETL pipeline between an operational database and a warehouse
- + Published, itemised rate card: workspace sizes, credit burn, storage tiers and every multiplier are public
- + Genuine free evaluation tier plus $500 of credits on Standard
- + MySQL-compatible wire protocol shortens migration from MySQL-based stacks
- + Documented compliance posture (ISO 27001, SOC 2 Type 2, HIPAA, CCPA, GDPR) and a BYOC option for data residency
Cons
- - Stacking multipliers (Enterprise 1.5x, Multi-AZ 1.3x, region tier, scaling) make real bills hard to predict from headline prices
- - Distributed-engine concepts (shard keys, distribution, reference tables) are overkill for simple CRUD applications
- - Free Shared tier is explicitly non-production and self-support only
- - Self-managed licensing and BYOC/Dedicated pricing require a sales conversation
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