TestForReaction vs The Body Index

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

TestForReaction compared with The Body Index
Detail	TestForReaction	The Body Index
What it does	Five-round browser benchmark	Free body-metric calculators with no accounts or ads in results
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	Five-round test sessions Average, median, best, and consistency scores Visual reaction test Leaderboard with verified scores Score sharing tools	Open source formulas on GitHub
What makes it different	Emphasizes repeatable sessions over single results Accounts for device and browser latency differences Includes consistency metric across rounds Multiple reaction test types for different preferences	Calculators for metrics beyond BMI that major sites haven't adopted Open source formulas validated against peer-reviewed research papers All code available under MIT license for verification and reuse Free embeddable widgets with attribution for other websites
Community votes	0	0
DR (Domain Rating by Ahrefs)	5 no change since last check	Not checked yet
Trust Flow (Majestic)	2	0
Citation Flow (Majestic)	17	0
Referring domains (Majestic)	7	0

4 details filled in for both companies.