| What it does | Free on-screen ruler and measuring tools with calculators
| Predict school closures and delays with live weather for any US or Canadian location
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| Stage | Startup
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| Founded | 2026
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| Based in | AE
| US
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| Pricing model | Free
| Free
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| Pricing | Free tools; RulerNest Pro (ad-free version with saved calibrations) coming soon with no pricing announced yet.
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| Key features | - On-screen ruler calibrated with bank card to 0.5 mm precision
- Unit converter for length, weight, temperature, area, volume
- BMI calculator with WHO bands
- Loan and EMI calculator with interest schedule
- Printable ruler for A4 and Letter paper
- No data collection or email required
- Offline access via service worker
| - Live weather data integration from OpenWeatherMap and Open-Meteo
- Multi-factor weather analysis including temperature, snowfall, wind, visibility, and ice risk
- Probability scoring with detailed factor breakdown
- Support for US ZIP codes and Canadian postal codes
- GPS location detection
- 50+ specialized winter calculators
- Mobile-responsive progressive web app design
- Local browser storage for recent searches with no account required
- Hourly forecast view
- Saved locations feature
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| What makes it different | - All calculations performed locally with no data sent to servers
- 23 specialized tools all in one place for measuring and everyday calculations
- Works offline and saves preferences locally on your device
- Designed specifically for United States and Canada with Imperial units as default
| - Explains the factors behind each prediction rather than showing an unexplained percentage
- Independent platform not affiliated with school districts or government agencies
- Continuous model refinement based on outcome review against reported closures
- Privacy-first architecture with no location data transmission or sale
- Accessible design with keyboard navigation and WCAG compliance
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 10 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 2 |
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| Citation Flow (Majestic) | 0 | 11 |
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| Referring domains (Majestic) | 0 | 29 |
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RulerNest
Snow Day Calculator