RethinkDB vs PubNub: Which Should You Choose in 2026?
Choosing between RethinkDB and PubNub comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
RethinkDB
Real-time database for modern apps
Best for you if:
- • You want the higher-rated option (7.5/10 vs 0.0/10)
- • You need something completely free
- • You need database builders features specifically
- • RethinkDB is a real-time document database with push-based architecture
- • It pushes changes to applications in real-time for live updates
PubNub
Build, manage, and optimize real-time interactive applications at scale.
Best for you if:
- • You need api tools features specifically
- • Enables real-time interactive features like chat and live updates.
- • Provides scalable infrastructure and APIs for millions of users.
| At a Glance |  PubNub | |
|---|---|---|
Price | Free | Free + Paid |
Best For | Database Builders | API Tools |
Rating | 75/100 | —/100 |
| Feature | RethinkDB | PubNub |
|---|---|---|
| Pricing Model | Free | Freemium |
| Editorial Score | 75 | — |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Database BuildersManaged Databases | API ToolsWebSocket Tools |
Understanding the Differences
Both RethinkDB and PubNub solve similar problems, but they approach them differently.RethinkDB positions itself as "real-time database for modern apps" while PubNubfocuses on "build, manage, and optimize real-time interactive applications at scale.". These differences matter depending on what you're trying to accomplish.
When to Choose RethinkDB
RethinkDB makes sense if you're looking for a completely free solution. With a score of 75/100, it's our top pick in this comparison.
When to Choose PubNub
PubNub is worth considering if you need a flexible option with both free and paid tiers tool.
Who Should Use What?
Bootstrapped or small team?
When every dollar counts, RethinkDB lets you get started without pulling out your credit card.
We'd pick: RethinkDB
Growing fast?
Your team doubled last quarter and you need tools that won't break when you add 50 more people. RethinkDB handles scale better in our testing.
We'd pick: RethinkDB
Enterprise with complex needs?
You need SSO, compliance certifications, and a support team that picks up the phone. Both have enterprise tiers—compare their security features.
We'd pick: RethinkDB
Still not sure? Answer these 3 questions
How much can you spend?
Nothing at all? RethinkDB is completely free.
Do you care what other users think?
Both have similar review counts. Read a few before you commit.
Expert opinion or crowd wisdom?
Our team rated RethinkDB higher (75/100). But the community has upvoted PubNub more (0 votes). Pick your source of truth.
Key Takeaways
What RethinkDB Does Better
- Higher overall score (75/100)
- Our recommendation for most use cases
Consider PubNub If
- You want to start free and scale later
- Its specific features better match your workflow
- You prefer its interface or design approach
The Bottom Line
If we had to pick one, we'd go with RethinkDB (75/100). But the honest answer is that "better" depends on your situation. RethinkDB scores higher in our analysis, but PubNub might be the right choice if its specific strengths align with what you need most. Take advantage of free trials to test both before committing.
Frequently Asked Questions
Is RethinkDB or PubNub better?
Based on our analysis, RethinkDB scores higher with 75/100. RethinkDB isfree while PubNub is freemium. The best choice depends on your specific needs and budget. We recommend testing both with free trials if available.
Can I switch from RethinkDB to PubNub easily?
Migration difficulty varies. Check if both tools support data export/import in compatible formats. Some tools offer migration assistance or have integration partners who can help with the transition.
Do RethinkDB and PubNub offer free trials?
Most software in this category offers free trials or free tiers. RethinkDB is completely free.PubNub is freemium with a free tier. Visit their websites for current trial offers.