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Auth0 vs FullStory: 2026 Comparison

Auth0 FullStory
Overview A flexible authentication and authorization platform for building secure login experiences with social, passwordless, and MFA support. FullStory captures and indexes every user interaction to provide complete digital experience analytics. Its session replay and heatmap capabilities help teams identify friction points and optimize user journeys.
Pricing Freemium (Free-$23/1K MAU) Paid ($0-custom)
Key Features
  • Universal Login
  • Social connections
  • MFA
  • Passwordless
  • SSO
  • RBAC
  • Breached password detection
  • Extensibility
  • Session replay
  • heatmaps
  • error tracking
  • conversion funnels
  • frustration signals
  • search analytics
  • privacy controls
  • API access
Pros
  • Comprehensive auth solution
  • Many social providers
  • Good documentation
  • Flexible rules
  • Excellent session replay quality
  • Powerful search capabilities
  • Good frustration detection
  • Strong privacy controls
Cons
  • Expensive at scale
  • Complex pricing
  • Can be overkill
  • Okta acquisition concerns
  • Expensive for high-traffic sites
  • Can impact page performance
  • Storage limitations
  • Complex pricing