ping123 vs ReactionTests

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

ping123 compared with ReactionTests
Detail	ping123	ReactionTests
What it does	IP information lookup and network risk detection tool	Test your visual reaction time for free
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Free
Pricing	Not given	Not given
Key features	Public IP lookup and display Location, ISP, and ASN information Native vs datacenter IP detection Proxy, VPN, and Tor detection AI app access risk checking WebRTC leak detection DNS leak testing System and browser fingerprinting Command line API access Multi-language support	Five-round visual reaction test with millisecond timing Seven-round sound reaction time test Local result history with up to 300 sessions stored Consistency measurement showing standard deviation of scores Download score card as image Sound calibration for personal offset adjustment Reference data from published research studies
What makes it different	Runs on Cloudflare Workers with no dedicated servers or databases Browser-side detection computed only on user's device Multiple data sources including Cloudflare edge network API endpoint for programmatic access	No account or login required to use the test Results stored locally in browser for privacy Compare full sessions to understand consistency, not just fastest round Research-backed reference data from laboratory studies
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	3 +1 (up) since last check	3 no change since last check
Trust Flow (Majestic)	1	0
Citation Flow (Majestic)	18	11
Referring domains (Majestic)	5	1

4 details filled in for both companies.

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