Developer Tools · head to head
Deno vs Firestore
Deno
Developer Tools
A fast, open-source, fully Node-compatible JS runtime with TypeScript baked right in
- From
- Free
- Free plan
- Yes
Firestore
Databases
Flexible, scalable NoSQL cloud database from Firebase
- From
- Free
- Free plan
- Yes
The short version
- Firestore is free; Deno starts at $20/mo.
- Where Deno falls short: egress bandwidth overage costs $0.20/GB which can become expensive for high-traffic applications.
- Where Firestore falls short: the no-cost Spark plan caps Standard edition at 50,000 document reads, 20,000 writes and 20,000 deletes per day.
- Prices and features on this page were last checked on 13 November 2026.
Where they differ
Only the attributes on which Deno and Firestore actually diverge.
Identical on both: starting price (Free), pricing model (Freemium), free tier (Yes).
Not yet recorded: founded for Deno.
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Deno
Nothing recorded that Firestore does not also cover.
Only in Firestore
- Document Model
- Real-time Updates
- Offline Support
- ACID Transactions
- Expressive Queries
- Multi-region
- Security Rules
- Firebase Auth
What people use each for
The jobs each tool is most often brought in to do.
Deno
- Running TypeScript natively without transpilation overheadnot Firestore
- Migrating Node.js applications to secure-by-default runtimenot Firestore
- Deploying edge functions and serverless containers seamlesslynot Firestore
- Consolidating developer tools into single binarynot Firestore
Firestore
- Storing structured application data with realtime listenersnot Deno
- Backing mobile and web apps with a serverless document databasenot Deno
- Building offline first apps that sync when connectivity returnsnot Deno
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Deno
- Egress bandwidth overage costs $0.20/GB which can become expensive for high-traffic applications
- CPU time overage is $0.10/hour on Pro and Builder tiers, adding to costs for compute-intensive workloads
- Enterprise pricing is not disclosed; requires sales contact
Firestore
- The no-cost Spark plan caps Standard edition at 50,000 document reads, 20,000 writes and 20,000 deletes per day
- The Spark plan caps storage at 1 GiB and network egress at 10 GiB per month
- Charging is per document read, so a query returning many documents bills for every one of them
- Going beyond the free thresholds requires the pay as you go Blaze plan billed at Google Cloud rates with no fixed monthly ceiling
Pricing, plan by plan
Deno
Free- FreeFree
- 1 million requests/month
- 20GB egress bandwidth
- 10 apps
- Pro$20/mo
- 5 million requests/month
- 200GB egress
- 50 apps
- Builder$200/mo
- 25 million requests/month
- 2,000GB egress
- 10,000 apps
- EnterpriseOn request
- Custom limits on all metrics
- 99.95% reliability SLA
- Email support with SLA
Firestore
Free- SparkFree
- 1GB storage
- 50K reads/day
- 20K writes/day
- BlazeFree
- Pay as you go
- Unlimited operations
- Multi-region
Which should you pick?
Choose Firestore if
- You need document model.
- You want to start without paying.
- You work on Web, iOS, Android, Flutter.
- You also want real-time updates.
Questions people ask
- Is Deno or Firestore better?
- Neither clearly leads. Deno starts at Free and Firestore at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Deno or Firestore?
- Deno starts at Free and Firestore at Free.
- Does Deno or Firestore run on more platforms?
- Deno runs on Web. Firestore runs on Web, iOS, Android, Flutter.
- Can I use Deno for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Deno best used for?
- Deno is most often used for running typescript natively without transpilation overhead, migrating node.js applications to secure-by-default runtime, deploying edge functions and serverless containers seamlessly, consolidating developer tools into single binary. Of those, running typescript natively without transpilation overhead and migrating node.js applications to secure-by-default runtime are not what Firestore is typically brought in for.
- What can Deno do that Firestore cannot?
- Firestore covers Document Model, Real-time Updates, Offline Support, ACID Transactions.
Answered from the vendors’ own pages
Deno: How much does Deno Deploy cost?
Deno Deploy offers a free tier at $0/month, Pro at $20/month, and Builder at $200/month. Enterprise has custom pricing. All plans include base request and bandwidth limits, with overage charges for additional usage.
SourceFirestore: What are the free limits on Cloud Firestore?
The Spark Plan includes 1 GiB of stored data, 50,000 reads per day, 20,000 writes per day, and 20,000 deletes per day at no cost.
SourceDeno: What are Deno Deploy's overage charges?
Egress bandwidth overages cost $0.20 per GB. CPU time overages are $0.10 per hour on Pro and Builder tiers. Memory time and KV database operations also incur charges beyond included limits.
SourceFirestore: What happens when I exceed the Spark Plan free tier?
Exceeding the free tier requires upgrading to the Blaze Plan, which bills based on actual usage through Google Cloud pricing. Charges apply for reads, writes, deletes, and data storage.
SourceDeno: How many apps can I deploy on Deno's free plan?
The free tier includes 10 apps with up to 1 concurrent build. Pro tier supports 50 apps with 3 concurrent builds, and Builder supports 10,000 apps with 20 concurrent builds.
SourceFirestore: Can I use Firestore without a credit card?
Yes, you can use the Spark Plan indefinitely without a credit card. To use the Blaze Plan (pay-as-you-go), a credit card is required.
SourceDeno: How many team members can access Deno Deploy?
The free tier supports up to 3 team members. Pro supports 10 team members. Builder supports 25 team members. Enterprise has custom seat limits.
SourceFirestore: Is there a trial period for Cloud Firestore?
No trial period is specified. The Spark Plan free tier serves as the trial, with no time limit.
SourceRelated pages
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