FaunavsFirebase

Saas0

Platform62

Score Comparison

Overall

Pricing

Usability

Performance

Support

Reliability

Onboarding

–

Mobile

Security

Integrations

FaunaFirebase

Signals Comparison

Reliability

Fauna

SERVICE SHUT DOWN - May 30, 2025(10/10)
Open source release promised but no timeline(7/10)

Firebase

January 2026 App Hosting build failures(7/10)

Pricing

Fauna

Costs did not scale to $0 like truly serverless(7/10)
Dashboard usage consumed operations(4/10)

Firebase

Costs skyrocket unexpectedly at scale(9/10)
Read/write operations add up quickly(7/10)
SMS authentication costs vary wildly by country(6/10)

Usability

Fauna

FQL query language had steep learning curve(6/10)
Type system difficult to debug(4/10)

Firebase

Firestore query limitations frustrate developers(8/10)
Console UI can be confusing and slow(5/10)

Support

Fauna

Documentation gaps for new product(5/10)

Firebase

Support is limited without paid GCP plan(6/10)

Customization

Fauna

No transactions spanning multiple requests(6/10)
Company pivoted focus from developers to enterprise(6/10)

Firebase

Severe vendor lock-in with Google ecosystem(8/10)

Integrations

Fauna

Lacked full-text search capability(5/10)

Firebase

Firebase features lag behind modern alternatives(6/10)

Mobile

Fauna

No signals

Firebase

SDK size bloats mobile apps(5/10)

Performance

Fauna

No signals

Firebase

Cold starts plague Cloud Functions(7/10)

Security

Fauna

No signals

Firebase

Security rules have a steep learning curve(7/10)

Pricing Comparison

Fauna

SERVICE DISCONTINUED

Free

Users: N/A

Storage: N/A

Limits: Cannot sign up or use - service terminated

Service no longer available - migrate to alternatives

Free Tier (Historical)

Free

Users: N/A

Storage: 5GB (was)

Limits: Historical reference only - service shut down

Service terminated - no longer applicable

Pay-Go (Historical)

$25/mo

Users: N/A

Storage: Pay per GB

Limits: Historical reference only - service shut down

Flat monthly fee + overages regardless of usage

Firebase

Spark (Free)

Free

Users: Unlimited Auth users

Storage: 1GB Firestore, 5GB Cloud Storage

Limits: Daily quotas reset, no outbound networking, limited to Google services only

No Cloud Functions, no extensions, no phone auth beyond limits

Blaze (Pay as you go)

Popular

$0/mo

Users: Unlimited

Storage: Pay per GB

Limits: Requires credit card, costs can spike without budget alerts configured

Firestore: $0.18/100K reads, $0.18/100K writes, $0.026/GB-day storage. Egress: ~$0.15/GB. SMS: $0.01-0.06+/message. Functions: $0.40/million invocations

Cloud Functions

$0.4/mo

Users: N/A

Storage: N/A

Limits: Only on Blaze plan, cold starts, 9-minute timeout (2nd gen), memory limits

Compute time charges separately, cold starts affect performance, egress costs apply

Firestore

$0.18/mo

Users: N/A

Storage: $0.18/GB-month

Limits: Query limitations (no OR, 10 whereIn limit), no native full-text search

Network egress extra, index costs, real-time listeners count as reads

Feature Comparison

Feature	Fauna	Firebase
Database
Document + Relational Was unique
Firestore Database NoSQL real-time
ACID Transactions Historical
SQL Queries FQL only
PostgreSQL NoSQL only
Auth
Authentication Multi-provider
Infrastructure
Global Distribution Historical
Hosting CDN included
Serverless Historical
Backend
Cloud Functions Blaze only
API
GraphQL Support Historical
Storage
Cloud Storage For files/media
Status
Active Service SHUT DOWN
Analytics
Analytics Free, integrated
Licensing
Open Source Promised, no timeline
Monitoring
Crashlytics Free
Search
Full-Text Search Never had
Full-text Search Needs Algolia/Elastic
Deployment
Self-Hosted Option Was cloud-only

Signals Comparison

Reliability

Fauna

SERVICE SHUT DOWN - May 30, 2025(10/10)
Open source release promised but no timeline(7/10)

Firebase

January 2026 App Hosting build failures(7/10)

Pricing

Fauna

Costs did not scale to $0 like truly serverless(7/10)
Dashboard usage consumed operations(4/10)

Firebase

Costs skyrocket unexpectedly at scale(9/10)
Read/write operations add up quickly(7/10)
SMS authentication costs vary wildly by country(6/10)

Usability

Fauna

FQL query language had steep learning curve(6/10)
Type system difficult to debug(4/10)

Firebase

Firestore query limitations frustrate developers(8/10)
Console UI can be confusing and slow(5/10)

Support

Fauna

Documentation gaps for new product(5/10)

Firebase

Support is limited without paid GCP plan(6/10)

Customization

Fauna

No transactions spanning multiple requests(6/10)
Company pivoted focus from developers to enterprise(6/10)

Firebase

Severe vendor lock-in with Google ecosystem(8/10)

Integrations

Fauna

Lacked full-text search capability(5/10)

Firebase

Firebase features lag behind modern alternatives(6/10)

Mobile

Fauna

No signals

Firebase

SDK size bloats mobile apps(5/10)

Performance

Fauna

No signals

Firebase

Cold starts plague Cloud Functions(7/10)

Security

Fauna

No signals

Firebase

Security rules have a steep learning curve(7/10)

Pricing Comparison

Fauna

SERVICE DISCONTINUED

Free

Users: N/A

Storage: N/A

Limits: Cannot sign up or use - service terminated

Service no longer available - migrate to alternatives

Free Tier (Historical)

Free

Users: N/A

Storage: 5GB (was)

Limits: Historical reference only - service shut down

Service terminated - no longer applicable

Pay-Go (Historical)

$25/mo

Users: N/A

Storage: Pay per GB

Limits: Historical reference only - service shut down

Flat monthly fee + overages regardless of usage

Firebase

Spark (Free)

Free

Users: Unlimited Auth users

Storage: 1GB Firestore, 5GB Cloud Storage

Limits: Daily quotas reset, no outbound networking, limited to Google services only

No Cloud Functions, no extensions, no phone auth beyond limits

Blaze (Pay as you go)

Popular

$0/mo

Users: Unlimited

Storage: Pay per GB

Limits: Requires credit card, costs can spike without budget alerts configured

Firestore: $0.18/100K reads, $0.18/100K writes, $0.026/GB-day storage. Egress: ~$0.15/GB. SMS: $0.01-0.06+/message. Functions: $0.40/million invocations

Cloud Functions

$0.4/mo

Users: N/A

Storage: N/A

Limits: Only on Blaze plan, cold starts, 9-minute timeout (2nd gen), memory limits

Compute time charges separately, cold starts affect performance, egress costs apply

Firestore

$0.18/mo

Users: N/A

Storage: $0.18/GB-month

Limits: Query limitations (no OR, 10 whereIn limit), no native full-text search

Network egress extra, index costs, real-time listeners count as reads

Feature Comparison

Feature	Fauna	Firebase
Database
Document + Relational Was unique
Firestore Database NoSQL real-time
ACID Transactions Historical
SQL Queries FQL only
PostgreSQL NoSQL only
Auth
Authentication Multi-provider
Infrastructure
Global Distribution Historical
Hosting CDN included
Serverless Historical
Backend
Cloud Functions Blaze only
API
GraphQL Support Historical
Storage
Cloud Storage For files/media
Status
Active Service SHUT DOWN
Analytics
Analytics Free, integrated
Licensing
Open Source Promised, no timeline
Monitoring
Crashlytics Free
Search
Full-Text Search Never had
Full-text Search Needs Algolia/Elastic
Deployment
Self-Hosted Option Was cloud-only