| What it does | Measure your reaction time and see where you rank against everyone else on the same device
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| Stage | Not given
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| Founded | Not given
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| Based in | US
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| Pricing model | Free
| Free
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| Key features | - 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
| - Download thumbnails in HD 1280×720 resolution
- Download five thumbnail sizes (HD, SD, HQ, Medium, Small)
- Support YouTube Shorts and youtu.be links
- No signup or account required
- No watermark on downloaded images
- Unlimited downloads with no daily limit
- Works on mobile, tablet, and desktop
- Private browser-based processing
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| What makes it different | - 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
| - Completely free with no signup, no watermark, and no download limits
- Private - runs entirely in browser with no data storage
- Instant results - no installation, no processing screens, no queues
- Multiple thumbnail sizes in one download
- Supports all YouTube link formats including Shorts and live streams
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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 |
| DR (Domain Rating by Ahrefs) | 2 ▲ +1 (up) since last check | 2 ● no change since last check |
| Trust Flow (Majestic) | 2 | 2 |
| Citation Flow (Majestic) | 22 | 14 |
| Referring domains (Majestic) | 9 | 3 |