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Firebase

Item: Firebase
Rating: 4.4

Google's BaaS: auth, Firestore, hosting, functions. Powerful but captive.

Category: Stack
Pricing: €0 · Freemium
How often: Per project
My rating: 4.4 out of 5

Try Firebase (official site, new tab)

In short

Firebase is still the BaaS reference, but the dependence on Google and the surprise costs at scale are real friction points.

Ideal for: Developers who want to start very fast with a backend managed by Google
Use case: Auth, realtime database, static hosting, serverless functions

What it costs

Entry price: €0. Prices taken from the official site, excluding tax.

What it costs
Plan	Per month	Per year	For whom
Spark (Free)	€0	–	Prototyping and small projects without Cloud Functions
Blaze (Pay as you go) · Recommended	Variable	–	Production projects, you only pay for what you use

Alternatives I ruled out

Alternatives I ruled out
Alternative	Why I did not keep it
Appwrite	Appwrite if you want independence. Firebase if you want maturity and the Google ecosystem. Better at: Open source, self-hostable, no vendor lock-in, GDPR-native Worse at: Less mature, smaller community, fewer side services
Supabase	Supabase for SQL/PostgreSQL. Firebase for realtime and the mobile ecosystem. Better at: Native PostgreSQL, SQL, Row Level Security, open source Worse at: Realtime less intuitive than Firestore, less mature mobile SDKs

Strengths and limits

Pros

Among the most mature SDKs on the market (web, iOS, Android, Flutter, Unity)
Firestore: realtime NoSQL database with listeners, instant synchronization between clients
Firebase Hosting: deployment in <30 seconds with a global CDN included
Analytics, Crashlytics, Performance Monitoring: observability out of the box
Security Rules: declarative permissions per document

Cons

Severe vendor lock-in, migrating off Firebase is a project in itself
Costs are hard to predict at scale, surprise bills are well known in the community
No SQL, Firestore requires you to denormalize your data
Cloud Functions logs and debugging are less ergonomic than a real server
Data hosted at Google, problematic depending on the GDPR context

Main features

Firestore: Realtime NoSQL database with synchronization between clients Chat, live dashboards, collaborative apps without managing WebSockets
Limit: No SQL, data modeling is different from PostgreSQL
Authentication: Email, Google, Apple, Facebook, phone, anonymous in a few lines of code Production-ready auth in <1h, with a prebuilt UI (FirebaseUI)
Cloud Functions: Serverless functions triggered by Firestore, HTTP, Auth events... Server-side business logic without managing a server
Limit: Cold starts of up to 3 to 5 seconds on rarely called functions
Firebase Hosting: Static and dynamic deployment with a global CDN, automatic SSL Deploy a Next.js or React app with one command, CDN included
Realtime Database: JSON database synchronized in realtime between all clients Simple realtime apps (games, online presence), cheaper than Firestore
Limit: Less flexible data model than Firestore, more limited scaling

Compatibility

macOS : compatible
Windows : compatible
Linux : compatible
iOS : compatible
Android : compatible
Browser : compatible
API : compatible
n8n : compatible
Zapier : compatible
Make : compatible

Frequently asked questions

Is Firebase free?

The Spark plan is free with generous quotas. Cloud Functions requires the Blaze plan (pay as you go).

Is Firebase GDPR compliant?

Firebase offers compliance tools, but the data goes through Google. You need a DPA with Google.

Firebase Firestore vs Realtime Database?

Firestore is the recommended solution for new projects, more flexible and better at scaling. Realtime Database remains for very simple cases.

How do I estimate the Firebase cost?

Use the Firebase calculator. Watch out for Firestore reads: a list of 1000 documents = 1000 reads.

Final verdict

The industry standard for mobile BaaS, but surprise costs and vendor lock-in are real frictions at scale.

I recommend it to: Mobile (iOS/Android/Flutter) and web developers who want to start fast with a managed backend.
Not suited for: Projects with strict GDPR constraints, or if cost predictability is critical.
Value for money: Good · 4.4 out of 5

Other tools on the workbench

Stack · €0 (self-hosted)
n8n
Stack · €0
Docker
Stack · €0
Appwrite

Plan

Per month

Per year

For whom

Spark (Free)

€0

–

Prototyping and small projects without Cloud Functions

Blaze (Pay as you go) · Recommended

Variable

–

Production projects, you only pay for what you use

Alternatives I ruled out

Alternatives I ruled out
Alternative	Why I did not keep it
Appwrite	Appwrite if you want independence. Firebase if you want maturity and the Google ecosystem. Better at: Open source, self-hostable, no vendor lock-in, GDPR-native Worse at: Less mature, smaller community, fewer side services
Supabase	Supabase for SQL/PostgreSQL. Firebase for realtime and the mobile ecosystem. Better at: Native PostgreSQL, SQL, Row Level Security, open source Worse at: Realtime less intuitive than Firestore, less mature mobile SDKs

Strengths and limits

Pros

Among the most mature SDKs on the market (web, iOS, Android, Flutter, Unity)
Firestore: realtime NoSQL database with listeners, instant synchronization between clients
Firebase Hosting: deployment in <30 seconds with a global CDN included
Analytics, Crashlytics, Performance Monitoring: observability out of the box
Security Rules: declarative permissions per document

Cons

Severe vendor lock-in, migrating off Firebase is a project in itself
Costs are hard to predict at scale, surprise bills are well known in the community
No SQL, Firestore requires you to denormalize your data
Cloud Functions logs and debugging are less ergonomic than a real server
Data hosted at Google, problematic depending on the GDPR context

Main features

Firestore: Realtime NoSQL database with synchronization between clients Chat, live dashboards, collaborative apps without managing WebSockets
Limit: No SQL, data modeling is different from PostgreSQL
Authentication: Email, Google, Apple, Facebook, phone, anonymous in a few lines of code Production-ready auth in <1h, with a prebuilt UI (FirebaseUI)
Cloud Functions: Serverless functions triggered by Firestore, HTTP, Auth events... Server-side business logic without managing a server
Limit: Cold starts of up to 3 to 5 seconds on rarely called functions
Firebase Hosting: Static and dynamic deployment with a global CDN, automatic SSL Deploy a Next.js or React app with one command, CDN included
Realtime Database: JSON database synchronized in realtime between all clients Simple realtime apps (games, online presence), cheaper than Firestore
Limit: Less flexible data model than Firestore, more limited scaling

Frequently asked questions

Is Firebase free?

The Spark plan is free with generous quotas. Cloud Functions requires the Blaze plan (pay as you go).

Is Firebase GDPR compliant?

Firebase offers compliance tools, but the data goes through Google. You need a DPA with Google.

Firebase Firestore vs Realtime Database?

Firestore is the recommended solution for new projects, more flexible and better at scaling. Realtime Database remains for very simple cases.

How do I estimate the Firebase cost?

Use the Firebase calculator. Watch out for Firestore reads: a list of 1000 documents = 1000 reads.

Final verdict

The industry standard for mobile BaaS, but surprise costs and vendor lock-in are real frictions at scale.

I recommend it to: Mobile (iOS/Android/Flutter) and web developers who want to start fast with a managed backend.
Not suited for: Projects with strict GDPR constraints, or if cost predictability is critical.
Value for money: Good · 4.4 out of 5

Firebase

In short

What it costs

Alternatives I ruled out

Strengths and limits

Pros

Cons

Main features

Compatibility

Frequently asked questions

Final verdict

Other tools on the workbench

n8n

Docker

Appwrite

Firebase

In short

What it costs

Alternatives I ruled out

Strengths and limits

Pros

Cons

Main features

Compatibility

Frequently asked questions

Final verdict

Other tools on the workbench

n8n

Docker

Appwrite