| What it does | Predict school closures and delays with live weather for any US or Canadian location
| Free calculators and guides for business, marketing, SaaS, ecommerce, real estate, restaurants and software decisions
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| Key features | - 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
| - 42 free calculators across ROI, marketing, SaaS, ecommerce, real estate, restaurant and software categories
- Transparent formulas with explanations and examples for each calculation
- Decision-focused results emphasizing practical metrics like ROI, ROAS, profit, margin, payback, CAC and LTV
- Browser-based calculations with optional account signup to save and export reports
- Downloadable and printable reports in multiple formats including PDF, CSV and images
- Practical guides accompanying each calculator with assumptions and business context
- Responsive design optimized for phones, tablets, laptops and desktops
- Popular calculators including SEO ROI, Google Ads ROI, SaaS LTV:CAC, MRR, ARR and NRR metrics
- Covers multiple business use cases including marketing, SaaS, ecommerce, real estate and restaurants
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| What makes it different | - 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
| - Clear explanations and context instead of just numbers from calculators
- No signup required for basic calculator use
- Consistent interface across all calculators designed for real business decisions
- Educational content showing assumptions and examples for each calculation
- Brings scattered business metrics into one unified platform
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Snow Day Calculator
SolveIndex