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Amplitude vs Fat Free CRM: 2026 Comparison

Amplitude Fat Free CRM
Overview Amplitude is a digital analytics platform that helps companies understand user behavior across their products. It specializes in behavioral analytics with powerful cohort analysis and experimentation capabilities. A lightweight open-source Ruby on Rails CRM application designed for small teams who want a simple self-hosted solution.
Pricing Freemium ($0-2000/mo) Freemium (Free (open source))
Key Features
  • Behavioral analytics
  • funnel analysis
  • retention analysis
  • user segmentation
  • experimentation
  • predictive analytics
  • journey mapping
  • collaboration tools
  • Contact management
  • Lead tracking
  • Opportunity management
  • Campaign tracking
  • Task management
  • User management
  • Custom fields
  • Tagging
Pros
  • Excellent behavioral analytics
  • Strong free tier
  • Great visualization tools
  • Powerful cohort analysis
  • Free and lightweight
  • Simple to use
  • Ruby on Rails based
  • Clean interface
Cons
  • Complex setup for advanced features
  • Can be expensive at scale
  • Steep learning curve
  • Event taxonomy requires planning
  • No longer actively maintained
  • Very basic features
  • Small community
  • Limited integrations

Amplitude

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Fat Free CRM

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