| What it does | Measure your reaction time and see where you rank against everyone else on the same device
| Free temporary email service with disposable inboxes and no registration required
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| Stage | Not given
| Startup
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| Founded | Not given
| 2025
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| Based in | US
| 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 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
| - Instant temporary email generation without registration
- Multiple domain options including EDU-style addresses
- Receive and download email attachments
- RESTful API for automated testing
- Real-time email delivery with sub-second processing
- Mobile app for Android
- Chrome browser extension
- Telegram bot integration
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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
| - No registration or personal information required for instant access
- Zero-log privacy policy with no IP tracking
- 160+ browser-based online tools beyond email
- Fast email delivery with automatic server polling
- Continuous rotation of pristine domains for high deliverability
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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 | 31 ▲ +1 (up) since last check |
| Trust Flow (Majestic) | 2 | 10 |
| Citation Flow (Majestic) | 22 | 32 |
| Referring domains (Majestic) | 9 | 851 |