| What it does | Free online calculators, converters, and everyday utilities
| Measure your reaction time and see where you rank against everyone else on the same device
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| Based in | Not given
| US
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| Pricing model | Free
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| Pricing | Not given
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| Key features | - BMI and health calculators
- Mortgage and loan calculators
- PDF merge, split and compress
- Image compression and resizing
- JSON formatter and CSV converter
- QR code and password generator
- SEO tools including schema validator
- Percentage and discount calculators
- Unit converter for multiple measurement types
- GPA and grade calculators
| - Reaction time measurement with five trials and median scoring
- Device-specific percentile ranking (mouse, trackpad, touchscreen)
- Exportable score history stored in your browser
- Embeddable tests for third-party websites
- Anonymous population distribution comparison without tracking
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| What makes it different | - All tools run directly in your browser with no data collection or server uploads
- Completely free with no sign-up or account required
- Fully responsive and works on all devices including mobile
- AI-powered features for enhanced functionality
- Privacy-first approach with no ads or tracking
| - Device-specific rankings that account for hardware differences like screen refresh rate and input latency
- No accounts, no tracking, and no third-party scripts or advertising
- Transparent methodology with published reference data sources and clear limitations
- Fully embeddable tests with no installation or sign-up required
- Median scoring from multiple trials to reduce noise and account for natural variability
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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) | 1 ● no change since last check | 1 ● no change since last check |
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| Trust Flow (Majestic) | 4 | 2 |
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| Citation Flow (Majestic) | 13 | 22 |
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| Referring domains (Majestic) | 7 | 9 |
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Toolvica
BenchSelf