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IndexReady vs 51Degrees

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

IndexReady compared with 51Degrees
DetailIndexReady logo IndexReady 51Degrees
What it doesCheck if search engines and AI crawlers can read your AI-built website before launch Device and IP intelligence APIs for developers
StageNot given Established
FoundedNot given 2010
Based inNot given GB
Pricing modelFreemium Freemium
PricingNot given Free plan: 10,000 monthly requests (cloud and on-premise); Essentials: €49 per month for 100,000 requests (cloud); Pro: €360 per month for 1,000,000 requests (cloud); Pro Plus: €680 per month for 5,000,000 requests (cloud); Bespoke: unlimited requests, custom terms (cloud and on-premise)
Key features
  • Check what crawlers see without JavaScript execution
  • Verify robots.txt, sitemaps and status codes
  • Check for noindex tags and canonical URL issues
  • Generate copy-paste fix prompts for AI builders
  • Audit up to 50 pages with Pro
  • Weekly re-checks with email alerts
  • Device Detection - identify device model, OS, browser, and hardware
  • IP Intelligence - location, network, carrier, and VPN detection
  • Bot detection and Human Confidence scoring
  • Geolocation and reverse geocoding powered by OpenStreetMap
  • Pipeline API for custom data services
  • 51Did Inspector tool to inspect identifiers
  • Prebid.js RTD module integration
  • Cloud and on-premise deployment options
  • Support for multiple programming languages
  • User-Agent Client Hints support
What makes it different
  • Made specifically for sites built with AI builders like Bolt, Replit, Cursor and Claude Code
  • Instantly shows exactly what AI crawlers and search engines see
  • Provides copy-paste fix prompts tailored to your AI builder framework
  • Tests the raw HTML without running JavaScript, like real crawlers do
  • Fifteen years of expertise in device detection with proprietary data
  • Open source approach with published API source code
  • Flexible deployment with both cloud and on-premise options
  • Extensible Pipeline API for aggregating micro services
  • Freemium model with free tier offering 10,000 monthly requests
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)Not checked yet no change since last check64 no change since last check
Trust Flow (Majestic)017
Citation Flow (Majestic)1643
Referring domains (Majestic)2398

4 details filled in for both companies.

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