TestForReaction vs birthchart.io

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 birthchart.io
Detail	TestForReaction	birthchart.io
What it does	Five-round browser benchmark	Birth chart calculator
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	Calculate Sun, Moon and rising signs Shows ten planets and aspects Multiple house systems available Private data processing on device Save birth details to browser Support for unknown birth times Historical time zone handling
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	Calculated entirely on your device with no cloud storage No account or login required Uses Astronomy Engine for precise geocentric calculations Explains astrological concepts and limitations
Community votes	0	0
DR (Domain Rating by Ahrefs)	5 no change since last check	2 no change since last check
Trust Flow (Majestic)	2	4
Citation Flow (Majestic)	17	12
Referring domains (Majestic)	7	3

4 details filled in for both companies.