Human Benchmark vs Free Krillion
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 Free Krillion
| Detail | 
Human Benchmark | 
Free Krillion |
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| What it does | Free cognitive tests to measure and improve your mental abilities
| The free endless dive trivia game where the rarest answer wins
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Free
| Free
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| Pricing | 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
| - Seven prompts per dive with 25 seconds each
- Six rarity scoring tiers from Plankton to One in a Krillion
- Ocean depth visualization showing score as metres descended
- Five real ocean zones from Sunlit Shallows to Hadal Trench
- Unlimited mode for endless practice dives
- Daily dive with same prompts for everyone
- Multiplayer with pass-and-play or online rooms
- Practice mode with no time pressure
- Question bank with 172 hand-built questions
- No account required; play as guest
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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
| - Rewards rare answers rather than just knowledge or speed
- Never reveals answer lists to preserve mystery
- Completely free with no premium tier or paywall
- Score visualized as real ocean descent through five zones
- Open-ended prompts with broad answer spaces
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | 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 | 13 |
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| Referring domains (Majestic) | 35 | 2 |
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4 details filled in for both companies.
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