CalcAttendance vs TestForReaction

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

CalcAttendance compared with TestForReaction
Detail	CalcAttendance	TestForReaction
What it does	Free attendance calculator for students to track how many classes they can safely miss	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	Calculate how many remaining classes can be missed while staying at target Determine how many consecutive sessions must be attended to recover if below threshold Track attendance for multiple subjects separately Browser-based with no sign-up or account required All calculations performed locally without sending data to servers	Five-round test sessions Average, median, best, and consistency scores Visual reaction test Leaderboard with verified scores Score sharing tools
What makes it different	No account or sign-up needed – instant access with no data collection All calculations happen in your browser – attendance data never leaves your device Supports multiple institutional requirements with 75%, 80%, 85%, and 90% target options Tracks multiple subjects simultaneously to prevent any single module from sliding below threshold Built and maintained by a single developer focused on honest, accurate answers	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)	19	17
Referring domains (Majestic)	3	7

4 details filled in for both companies.

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