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APIVerve vs Calendarific

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

APIVerve compared with Calendarific
DetailAPIVerveCalendarific
What it doesOne key for 300+ production APIs Global Holiday Calendar API for National and Religious Holidays
StageEstablished Established
FoundedNot given 2014
Based inUS Not given
Pricing modelfreemium Not given
PricingFree plan includes 200 credits/month with rate limits. Starter at $29.99/month offers 200,000 credits. Pro at $99.99/month provides 1,000,000 credits. Mega at $299.99/month includes 4,000,000 credits. Credit-based pricing with no setup fees or contracts, cancel anytime. Not given
Key features
  • Consistent response envelope across all endpoints
  • Unified credit pool pricing model
  • 99.9% uptime SLA on paid plans
  • Access to 300+ production APIs
  • Typed SDKs for Node.js, Python, Go, PHP
  • Global deployment across 24 regions
  • MCP-ready for AI agents
  • GraphQL support on Pro and Mega plans
  • Access to 230+ countries and 3,300+ states and regions
  • Holiday data in 100+ languages
  • Substitute days included
  • Regional granularity with state and province codes
  • Low latency responses under 10ms
  • Servers handling over half a billion API queries per day
  • Holiday data types: national, local, religious, and observance
  • Filter by month and day
  • Stable holiday UUIDs
  • JSON responses with copy-ready code samples
What makes it different
  • One authentication key for all 300+ APIs eliminates integration complexity
  • Predictable credit-based pricing with no per-endpoint rate cards
  • Consistent JSON response schema across all endpoints
  • Production-ready with 99.9% uptime SLA and 24 global regions
  • Developer-friendly approach with simple authentication and no SDK required
  • Data aggregated and verified from multiple sources
  • Enterprise-grade with SLA and dedicated account managers
  • Use-case-specific workflows for payroll, scheduling, and localization
  • Flexible localization with fallback to English
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)48 no change since last check53 no change since last check
Trust Flow (Majestic)1821
Citation Flow (Majestic)5142
Referring domains (Majestic)2358792

4 details filled in for both companies.

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