Firebase Firestore vs RethinkDB: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for Firebase Firestore and RethinkDB side by side. This page compares data; it is not a hands-on review.
On the data: On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Firebase Firestore
Flexible, scalable NoSQL cloud database
Best for you if:
- • You want NoSQL database
RethinkDB
Real-time database for modern apps
Best for you if:
- • You want a fully free tool (Firebase Firestore requires payment)
| At a Glance | Firebase Firestore | RethinkDB |
|---|---|---|
Starts at | Free plan | Free 100% free |
Category | Data & Databases Cloud & Infrastructure | Data & Databases WebSocket Tools |
Rating | 3.6/5 Capterra 4.6 · Trustpilot 2.5 19 reviews | 4.3/5 G2 4.3 15 reviews |
Free plan | Yes | Yes |
Watch out for | Indexing can consume storage and impact performance. | n/a |
Choose Firebase Firestore or RethinkDB?
Choose Firebase Firestore if
- You want NoSQL database
- You want real-time sync
Choose RethinkDB if
- You want a fully free tool (Firebase Firestore requires payment)
- You want real-time database
- You want good for live updates
In-Depth Analysis
Firebase Firestore
Flexible, scalable NoSQL cloud database
Firebase Firestore offers a very generous free Spark tier, making it highly accessible for small projects and development.
Watch out
Indexing can consume storage and impact performance.
Strengths
- Pro: NoSQL database
- Pro: Real-time sync
- Pro: Good for mobile
- Pro: Active development
- Pro: Fair pricing
Weaknesses
- Con: Vendor lock-in
- Con: Complex pricing
- Con: Learning curve
- Con: NoSQL limitations
- Con: Google dependency
Key features
RethinkDB
Real-time database for modern apps
RethinkDB's pricing is exceptionally generous, as it is entirely open-source and free.
Strengths
- Pro: Real-time database
- Pro: Good for live updates
- Pro: Open source
- Pro: Good query language
- Pro: Push architecture
Weaknesses
- Con: Less popular now
- Con: Company dissolved
- Con: Community smaller
- Con: Production concerns
- Con: Better alternatives exist
Key features
Plans and prices: Firebase Firestore vs RethinkDB
| Tool | Plans and prices | Source |
|---|---|---|
| Firebase Firestore |
| firebase.google.com/products/firestoreread Sep 30, 2026 |
| RethinkDB |
| rethinkdb.comread Oct 4, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on Firebase Firestore pricing and RethinkDB pricing.
Key Takeaways
Firebase Firestore
- Choose if you want flexible, scalable NoSQL cloud database
RethinkDB
- Choose if you want real-time database for modern apps
What the data shows
On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
- User ratings rest on too few reviews to rank (3.6/5 from 19 reviews for Firebase Firestore, 4.3/5 from 15 reviews for RethinkDB; we compare ratings only above 20 reviews on both sides).
- Both have a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do Firebase Firestore and RethinkDB compare in 2026?
On the data below the two are close or not directly comparable, so we do not name a winner for this pair. User ratings rest on too few reviews to rank (3.6/5 from 19 reviews for Firebase Firestore, 4.3/5 from 15 reviews for RethinkDB; we compare ratings only above 20 reviews on both sides). Both have a free plan.
What are Firebase Firestore and RethinkDB used for?
Firebase Firestore: Flexible, scalable NoSQL cloud database. RethinkDB: Real-time database for modern apps.
What does Firebase Firestore cost vs RethinkDB?
Firebase Firestore has no public paid-plan price on file. RethinkDB is free. Prices read on the vendors' pricing pages, latest check Oct 4, 2026.
What's the main difference between Firebase Firestore and RethinkDB?
Firebase Firestore's main strength: NoSQL database. RethinkDB's main strength: real-time database.