Human Benchmark vs Ninefold
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Human Benchmark compared with Ninefold
| Detail | 
Human Benchmark | 
Ninefold |
|---|
| What it does | Free cognitive tests to measure and improve your mental abilities
| Nine letters. One hidden word.
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| Stage | Not given
| Startup
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| Founded | Not given
| 2026
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| Based in | Not given
| US
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| Pricing model | Free
| Free
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| Pricing | Not given
| Not given
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| Key features | - 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
| - New puzzle every day at midnight in local time zone
- Build words of four or more letters using center letter
- Each tile can be used once per word
- Streak tracking by solving the nine-letter word
- Archive of past puzzles available to play
- Optional daily email subscription
- No account or login required
- Built for single thumb play
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| What makes it different | - 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
| - Same grid for everyone each day without competitive leaderboards
- No ads, no app needed, plays in any web browser
- Includes Journal with strategy guides and focus articles
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| Free plan | Not given
| Not given
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| Open source | Not given
| Not given
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| Platforms | Not given
| Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 14 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 8 | 0 |
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| Citation Flow (Majestic) | 24 | 0 |
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| Referring domains (Majestic) | 35 | 0 |
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4 details filled in for both companies.
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