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Apollo.io vs Really Simple Systems: 2026 Comparison

Apollo.io Really Simple Systems
Overview Apollo.io is an all-in-one sales intelligence and engagement platform with a database of over 275 million contacts. It combines prospecting, enrichment, and outreach automation in a single workflow. A straightforward cloud CRM designed for small businesses and teams running B2B operations.
Pricing Freemium ($0-99/mo) Freemium (Free-$46/user/month)
Key Features
  • Contact database
  • email sequencing
  • dialer
  • LinkedIn integration
  • buying intent signals
  • data enrichment
  • CRM sync
  • lead scoring
  • Contact management
  • Sales pipeline
  • Marketing tools
  • Service desk
  • Custom reports
  • Email integration
  • API access
  • GDPR compliance
Pros
  • Massive contact database
  • Generous free tier
  • All-in-one platform
  • Good data accuracy
  • Very easy to use
  • Affordable
  • Good customer support
  • GDPR focused
Cons
  • Data can be outdated for smaller companies
  • UI can feel cluttered
  • Email deliverability issues at scale
  • Limited features
  • Basic interface
  • Not for larger teams
  • Few advanced automations

Apollo.io

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Really Simple Systems

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