# Hail Sentinel — Storm Alerts, Radar & Forecast > Advanced hail detection and storm tracking with real-time alerts and historical data. (iPhone/iPad app by Icarus, Inc..) - Source: https://appshunter.io/ios/app/hail-sentinel/id6748548555 (this page in markdown: same URL + `.md`) - Developer: [Icarus, Inc.](https://appshunter.io/developer/1771575441) - Category: Weather, Utilities - Price: Free with in-app purchases - Rating: 5.00/5 from 3 App Store ratings - Age rating: 4+ - Requires: iOS 16.0 · 46 MB - Languages: American English, Arabic, Filipino, French (France), German (Germany), Korean, Russian, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan) and 1 more - Released: 2026-08-26 - Data updated: 2026-09-18 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/hail-sentinel/id6748548555/reviews.md ## What is Hail Sentinel? Hail Sentinel: hail detection, alerts, and analysis, built on Anvil, our own machine-learning model. Most weather apps warn a county at a time. Some go address-level, but still read the same generic weather data. We run Anvil over dual-polarization radar every two minutes. Built to find hail, not weather in general: when hail is closing in, where the storm is on live radar, and a record of what fell once it passed. WHAT YOU GET FOR FREE - Real-time push the moment hail is closing in on your address - Every severe warning, at full precision. Safety alerts are never behind a paywall - Live storm radar, colored by what's actually falling - Today's and tomorrow's hail outlook - One saved location - Neighborhood hail history, refreshed each season Free and Premium run on the same hail detection. Premium doesn't make detection better. It gives you more warning, more places, more tools. PREMIUM - Earlier heads-up. Watches hours ahead, and a nudge as a storm turns your way. Varies by storm. - After-the-Storm Reports. A timestamped record of peak hail size, timing and radar evidence, formatted for an insurance conversation - The full 7-day hail outlook instead of 2 days - Up to 4 saved locations, each with its own alerts, forecast and history - Live GPS alerts. They follow you as you drive, not a fixed address - Playbooks. Automatic actions when hail threatens: an instant push, an optional webhook for your smart home, and a timestamped evidence record - SMS and email backup of the same alerts - Neighborhood hail history in real time WATCH, WIDGETS AND CARPLAY - Apple Watch app and complications - Home Screen widgets: today's hail chance, 7-day outlook, nearby storm cells - Lock Screen widgets (iOS 16+) - CarPlay with active alerts and Live GPS status BUILT ON OUR OWN HAIL SCIENCE We built our own detector. Anvil is a machine-learning model trained on the dual-pol radar signature of hail itself, fusing radar, satellite, verified ground reports and forecast models. It weighs 83 signals per prediction and re-scores every storm nationwide on a 1 km grid every two minutes. Zero clear-day and zero winter false alarms in our test battery. Not a MESH/MRMS passthrough. No system on Earth catches every stone. Rather than pretend otherwise, we work on being the most accurate you can get and tell you plainly what we can and can't see. PRIVACY Your hail reports train places, not people. They improve detection for areas, never to profile you. We don't sell your data. SUBSCRIPTION Premium is an auto-renewing subscription at $6.99 per month or $49.99 per year. Founding Member pricing of $3.99 per month or $29.99 per year runs through October 31, 2026 and stays locked in for as long as you're a member. Payment is charged to your Apple ID at confirmation of purchase. Your subscription renews automatically unless auto-renew is turned off at least 24 hours before the current period ends, and your account is charged for renewal within 24 hours of that. Manage your subscription and turn off auto-renew in your Apple ID Account Settings. Any unused portion of a free trial is forfeited when you buy a subscription. Terms of Use: https://hailsentinel.com/legal/terms Privacy Policy: https://hailsentinel.com/legal/privacy IMPORTANT Hail Sentinel supplements but does not replace official National Weather Service warnings. Always follow local emergency guidance. Alert delivery is not guaranteed. It depends on radar coverage, data feeds, connectivity and your device settings. A quiet app does not mean a quiet sky, so keep a second way to receive official warnings. After-the-Storm Reports record hail conditions at your address. They do not assess or certify property damage. That is your adjuster's determination. Hail Sentinel is not an insurance product. Hail Sentinel is available only in the contiguous United States, and is not affiliated with, endorsed by, or sponsored by the National Weather Service, NOAA, or any government agency. ## Key features - Real-time hail alerts - Live storm radar - Neighborhood hail history - After-the-Storm Reports - Live GPS alerts - Apple Watch app and widgets - CarPlay integration ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium — Annual | $49.99 | per year | | Premium — Monthly | $6.99 | per month | | Founder — Monthly | $3.99 | per month | | Founder — Annual | $29.99 | per year | ## Frequently asked questions about Hail Sentinel ### Does Hail Sentinel have ads? No, Hail Sentinel does not contain advertisements. The app is free to use with optional premium features available via subscription. ### What is the pricing for Hail Sentinel Premium? Premium is available for $6.99 per month or $49.99 per year. A special 'Founding Member' price of $3.99 per month or $29.99 per year is available until October 31, 2026. ### What devices support Hail Sentinel? Hail Sentinel is supported on Apple Watch, iPhone, and iPad, offering a comprehensive experience across your Apple devices. ### How often is Hail Sentinel updated? The app was last updated on August 28, 2026, indicating a commitment to regular maintenance and improvements. ### What is the age rating for Hail Sentinel? Hail Sentinel has an age rating of 4+, making it suitable for a wide range of users concerned about weather safety. ### Can I cancel my Hail Sentinel subscription? Yes, your subscription renews automatically unless auto-renew is turned off at least 24 hours before the current period ends. You can manage your subscription through your Apple ID settings. ### What makes Hail Sentinel's detection unique? Hail Sentinel utilizes its proprietary machine-learning model, Anvil, which processes dual-polarization radar data every two minutes to specifically identify hail signatures, rather than generic weather patterns. ### Does Hail Sentinel offer a free trial for Premium? Yes, the Premium subscription plans offer a 7-day free trial, allowing you to experience the advanced features before committing to a purchase. ## Version history (last 5 releases) ### 1.3.10 — 2026-09-17 • Layouts for iPad and Mac across the app, plus a refreshed sign-in screen. • Redesigned Storm Report and alert pages, now with radar and a storm timeline. • Stability and performance improvements. ### 1.3.4 — 2026-09-13 • A fresh app icon with our new Storm contours background. • Language and localization improvements throughout the app. • Performance improvements to app startup and notification setup. ### 1.3.2 — 2026-09-12 • New contour radar shows storms as clean, easy-to-read bands of color (classic imagery is still one tap away) • Faster, smoother radar that updates twice as often • Tap an alert or weather warning to open it right on the map • New radar settings: map style, layers, storm paths, loop length, speed, data saver and battery saver • A simpler color key that shows storm strength and hail size together • A personal storm briefing and smoother setup for new users • Fixed a launch crash, plus faster startup and more reliable Follow Me ### 1.1.1 — 2026-08-28 Improved alert and radar accuracy, smoother CarPlay, and a handful of bug fixes. ### 1.0.0 — 2026-08-26 No release notes. ## Apps similar to Hail Sentinel | App | Rating | Price | Category | | --- | --- | --- | --- | | [HailScout: Hail Alerts](https://appshunter.io/ios/app/hailscout-hail-alerts/id6761770544) | 4.9 (20) | Free | Weather | | [Hail Drive](https://appshunter.io/ios/app/hail-drive/id6761149272) | 5.0 (1) | Free | Weather | | [Weather Radar Pro & Forecast](https://appshunter.io/ios/app/weather-radar-pro-and-forecast/id6766143049) | 5.0 (1) | $0.99 | Weather | | [StormRecord](https://appshunter.io/ios/app/stormrecord/id6758730551) | — | Free | Weather | | [Spotter Tools Pro: Storm Radar](https://appshunter.io/ios/app/spotter-tools-pro-storm-radar/id6775985245) | 5.0 (6) | $19.99 | Weather | | [Thundra](https://appshunter.io/ios/app/thundra/id6756683794) | — | Free | Weather | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-18.*