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CallBooker vs REX

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

CallBooker compared with REX
DetailCallBooker logo CallBookerREX logo REX
What it doesAI voice agents that call your leads within seconds, handle objections and book meetings on your calendar A coding agent that runs your whole Windows PC by voice or text
StageNot given Not given
FoundedNot given Not given
Based inNot given ES
Pricing modelFreemium Free
PricingFree plan: 10 AI talk minutes (one-time, no card needed). Starter: $39/month with 200 AI talk minutes. Growth: $99/month with 550 AI talk minutes. Scale: $249/month with 1,500 AI talk minutes. Extra minutes can be purchased separately: 100 for $19, 500 for $79, 1,000 for $139. Phone calls billed sep Free. Windows 10 or later, 64-bit.
Key features
  • Calls leads within seconds of form submission or CRM entry
  • Natural-sounding voices in 33 languages
  • Handles objections like "not interested" or "send me an email"
  • Books meetings directly into Google Calendar or Calendly during the call
  • Voicemail detection to avoid paying for machine messages
  • Full call transcripts and summaries for every call
  • Lead API and Zapier integration for automatic lead delivery
  • Custom knowledge base for each AI agent
  • Call recordings kept 30 days to 1 year depending on plan
  • Verifies results before completion
  • Voice and text input
  • Runs on Windows 10 or later, 64-bit
  • Compatible with any AI model you choose
  • Multi-step task automation
  • Checks live results in real applications
What makes it different
  • Calls leads in seconds, not hours or days later
  • Books meetings live during the call while lead is interested
  • Operates the entire Windows desktop, not just the terminal
  • Verifies task completion by checking real application results
  • Completely free with no subscription required
  • Voice control for hands-free operation
  • Measured performance on public benchmarks
Community votes00
DR (Domain Rating by Ahrefs)1 no change since last check2 no change since last check
Trust Flow (Majestic)22
Citation Flow (Majestic)2524
Referring domains (Majestic)3315

5 details filled in for both companies.

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