TestForReaction vs Lumber Calc

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 Lumber Calc
Detail	TestForReaction	Lumber Calc
What it does	Five-round browser benchmark	Not given
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	US
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	Board feet calculation for hardwood pricing Stair dimension and stringer layout calculation Deck board and baluster spacing calculator IRC and DCA 6 code compliance checks Printable shopping lists Rafter length and roof pitch calculation Cut list optimizer for stock length packing Detailed diagrams for layout visualization Log scale and board foot conversion tools
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	Results stay on your device with no account or cloud storage required Transparent formula methodology with hand-checked examples Free to use with no sign-up or premium tiers
Community votes	0	0
DR (Domain Rating by Ahrefs)	5 no change since last check	22 +22 (up) since last check
Trust Flow (Majestic)	2	0
Citation Flow (Majestic)	17	0
Referring domains (Majestic)	7	0

3 details filled in for both companies.