Solitaire Online vs Human Benchmark

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

Solitaire Online compared with Human Benchmark
Detail	Solitaire Online	Human Benchmark
What it does	Free browser solitaire games with no downloads or sign-ups	Free cognitive tests to measure and improve your mental abilities
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	Unlimited undo and hints Instant play with no sign-up Works on phone, tablet and desktop Game progress saved locally in browser 15 solitaire variants	Reaction Time Test - measure response to visual stimuli Visual processing tests including Visual Memory, Symbol Search, and Color Blindness Score tracking and comparison to other users Leaderboard functionality Aim Trainer test Color Hue Test for color distinction FPS Reaction training including Gridshot, Flick, and Tracking
What makes it different	No required account or payments All 58 games free and complete Offline-compatible static web technology Identical game mechanics across solitaire variants	No signup required - tests available immediately without account creation Tests based on established research protocols rather than casual games Scores stored locally in browser with no personal data tracking or sale Accessible cognitive testing without requiring lab or academic credentials
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)	5 no change since last check	14 no change since last check
Trust Flow (Majestic)	4	8
Citation Flow (Majestic)	19	24
Referring domains (Majestic)	7	35

4 details filled in for both companies.

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