GrowthMath vs TestForReaction

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

GrowthMath compared with TestForReaction
Detail	GrowthMath	TestForReaction
What it does	Free calculators for marketers, affiliates and store owners	Five-round browser benchmark
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	ROAS calculator with break-even analysis CPA and CPM calculator for ad costs LTV and CAC calculators for e-commerce Affiliate earnings and EPC calculator UTM link builder for GA4 tracking A/B test significance and sample size calculator Shopify profit calculator YouTube earnings estimator Affiliate Link Checker Chrome extension	Five-round test sessions Average, median, best, and consistency scores Visual reaction test Leaderboard with verified scores Score sharing tools
What makes it different	Runs entirely in browser with no signup required Private calculations that never leave your device Every tool explains formulas, benchmarks and common mistakes Completely free with no premium plans	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
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	5 no change since last check
Trust Flow (Majestic)	1	2
Citation Flow (Majestic)	17	17
Referring domains (Majestic)	2	7

4 details filled in for both companies.