| What it does | Test your visual reaction time for free
| 1000+ free online tools that run entirely in your browser
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| Stage | Not given
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| Pricing model | Free
| Free
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| Pricing | Not given
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| 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
| - 1000+ free tools across multiple categories
- All tools run entirely in the browser with no uploads
- No sign-ups or accounts required
- Tools work offline after loading
- Image editing tools including PNG to JPG conversion
- PDF compression without uploading files
- Financial calculators including mortgage calculator
- Text comparison and analysis tools
- Developer utilities for JSON, code formatting and data validation
- Comprehensive guides and tutorials for tool usage
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| 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
| - Complete privacy: all processing happens on your device with zero data uploads
- Verifiable client-side architecture users can inspect in Network tab
- No sign-ups, accounts, or artificial limits with no pro tier
- Continuously maintained tools tested against real files and real browsers
- Guides written with verified facts and checked numbers, not marketing claims
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| Free plan | Not given
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| Open source | 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) | 3 ● no change since last check | 18 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 5 |
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| Citation Flow (Majestic) | 11 | 23 |
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| Referring domains (Majestic) | 1 | 57 |
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ReactionTests
All Tools Verse