Firebase Authentication

Google-backed auth with generous free tier for mobile and web

Sentry

Application monitoring and error tracking

Firebase Authentication vs Sentry: Full Comparison (2026)

Pricing, features, scores, and a clear verdict on which one is right for you.

The bottom line

Firebase Authentication positions itself as "google-backed auth with generous free tier for mobile and web" while Sentry goes after "application monitoring and error tracking" — so the right pick depends on which problem you're actually solving. Both use freemium pricing, but Firebase Authentication charges per mau while Sentry charges custom — a meaningful difference for larger teams.

At a glance

	Firebase Authentication	Sentry
Our score	76/100	85/100
Starting price	Free	Free
Free tier	Yes	Yes
Best for	Google-backed auth with generous free tier for mobile and web	Application monitoring and error tracking

Pricing comparison

Firebase Authentication

Free tier available

Spark (Free)Free

Blaze (Pay-as-you-go)$null/mo

Pricing verified 2026-04-16

Sentry

Free tier available

DeveloperFree

Team$26/mo

Business$80/mo

Enterprise$null/mo

Pricing verified 2026-04-16

Calculate your cost

How many developers?10

1500

Firebase AuthenticationUnknown

Contact sales

SentryUnknown

Contact sales

Try Firebase Authentication free →Try Sentry free →

Feature comparison

core

Feature	Firebase Authentication	Sentry
Email/password	Yes	No
Google OAuth	Yes	No
Apple OAuth	Yes	No
Phone SMS	Yes	No
Anonymous auth	Yes	No
Error tracking	No	Yes
Performance monitoring	No	Team+
Session replay	No	Team+
Release tracking	No	Yes
Source maps	No	Yes

advanced

Feature	Firebase Authentication	Sentry
Multi-tenancy	Blaze	No
SAML SSO	Blaze ($0.015/MAU)	No
Custom claims	Yes	No
App Check	Yes	No
Blocking functions	Yes	No
Seer AI (root cause)	No	Team+
Crons monitoring	No	Team+
Code coverage	No	Yes
Distributed tracing	No	Team+
Alert rules	No	Yes

integrations

Feature	Firebase Authentication	Sentry
Firebase (all products)	Yes	No
Google Cloud	Yes	No
Flutter	Yes	No
Android/iOS SDKs	Yes	No
Web SDK	Yes	No
Slack	No	Yes
GitHub	No	Yes
Jira	No	Yes
PagerDuty	No	Yes
GitLab	No	Yes

Ratings breakdown

Firebase Authentication

Ease of use

8/10

Value for money

9/10

Features

7/10

Support

6/10

Sentry

Ease of use

8/10

Value for money

8/10

Features

9/10

Support

7/10

What the data tells us

Key capabilities you'd miss

Choosing Firebase Authentication means going without Error tracking, Performance monitoring, Session replay (which Sentry offers). Choosing Sentry means losing Email/password, Google OAuth, Apple OAuth. These are the features that typically drive the final decision — check whether your workflow depends on any of them before committing.

What company size tells you

Sentry (201-500 employees) has the engineering bench to ship features across many fronts but may iterate slower on individual requests. Firebase Authentication (100,000+ employees) typically ships faster on its core product but may lag on peripheral features. Consider which matters more for your roadmap.

Plan flexibility

Sentry offers 4 tiers, giving you finer control over what you pay for at each growth stage. Firebase Authentication's 2-tier structure is simpler to evaluate but may force you into a higher plan sooner for features you need.

Choose Firebase Authentication if...

You want a free tier to get started
You value an intuitive, easy-to-use interface
Getting strong value for money is a priority

Try Firebase Authentication free →

Choose Sentry if...

You want a free tier to get started
You value an intuitive, easy-to-use interface
Getting strong value for money is a priority

Try Sentry free →

Frequently asked questions

Is Firebase Authentication or Sentry better?

Sentry scores 85/100 compared to Firebase Authentication's 76/100 on VendorVS. However, the best choice depends on your needs — Firebase Authentication excels at ease of use (8/10) while Sentry scores 8/10.

How much does Firebase Authentication cost compared to Sentry?

Firebase Authentication starts at free (free tier available). Sentry starts at free (free tier available). Firebase Authentication is the more affordable option.

Does Firebase Authentication or Sentry have a free plan?

Yes, both Firebase Authentication and Sentry offer free tiers, so you can try each before committing to a paid plan.

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