ReactionTests vs A2Z Tools

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

ReactionTests compared with A2Z Tools
Detail	ReactionTests	A2Z Tools
What it does	Test your visual reaction time for free	Free online tools for files, media, text, code and business. No sign-up required.
Stage	Not given	Established
Founded	Not given	2021
Based in	Not given	IN
Pricing model	Free	Freemium
Pricing	Not given	A2Z Tools core offering is free. A2Z Workspace apps are free with an account. Pro plans for individual apps are coming soon with pricing to be announced. A2Z Everything will add ad-free access to all A2Z tools.
Key features	Five-round visual reaction test with millisecond timing Seven-round sound reaction time test Local result history with up to 300 sessions stored Consistency measurement showing standard deviation of scores Download score card as image Sound calibration for personal offset adjustment Reference data from published research studies	1,122 free tools across 52 categories No signup required to use most tools Browser-based processing for most tools Mobile and tablet compatible Browser extensions for Chrome, Firefox, and Edge Free API access Embeddable widgets for websites Chat widgets for WhatsApp, Telegram, Facebook, Viber
What makes it different	No account or login required to use the test Results stored locally in browser for privacy Compare full sessions to understand consistency, not just fastest round Research-backed reference data from laboratory studies	Not given
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	3 no change since last check	27 no change since last check
Trust Flow (Majestic)	0	17
Citation Flow (Majestic)	11	31
Referring domains (Majestic)	1	51

3 details filled in for both companies.

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