# Horizon Alert — Real-time sky alerts near you > Real-time sky event alerts with visibility intelligence and location-based mapping. (iPhone/iPad app by Matt Strelecki.) - Source: https://appshunter.io/ios/app/horizon-alert/id6775081308 (this page in markdown: same URL + `.md`) - Developer: [Matt Strelecki](https://appshunter.io/developer/1820759554) - Category: Entertainment, Education - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 26.4 · 3 MB - Languages: American English - Released: 2026-07-14 - Data updated: 2026-07-26 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/horizon-alert/id6775081308/reviews.md ## What is Horizon Alert? Horizon Alert tells you exactly when, where, and how to look up — and only when you can actually see something. A "Up Next" feed gathers every event visible from your location into one chronological list: rocket launches, ISS passes, meteor showers, eclipses, spacewalks, and more. Each one shows a live countdown and which direction to face. A "Nearby" map view centers on you with launch pads pinned on real satellite imagery and a visibility ring drawn at true geographic scale. Real visibility intelligence: • Cloud cover at launch time, fetched per location • Sun elevation, so daylight launches aren't dressed up as visible • Distance from the pad, calculated as a great-circle bearing Smart alerts you'll actually trust: • Choose your timings — 1 day, 12 hours, 2 hours, 30 minutes, 10 minutes, or T-zero • Notifications auto-cancel if conditions degrade • If the sky unexpectedly clears, you'll get a "conditions just cleared" alert ISS overhead passes: • Rise compass, peak altitude, set compass, brightness • All predicted from your location, with countdowns Built privacy-first: • No accounts, no analytics, no third-party tracking • Your location stays on your device • The only thing sent off your phone is a rounded latitude and longitude to fetch a cloud forecast for your general area A clean, dark-mode-native experience for anyone who wants to look up. ## Key features - Up Next feed of visible celestial events - Nearby map with launch pad locations - Real-time visibility intelligence (cloud cover, sun elevation) - Customizable alert timings - Smart notifications that auto-cancel - ISS pass predictions with compass and brightness ## Frequently asked questions about Horizon Alert ### What celestial events does Horizon Alert notify me about? Horizon Alert notifies you about rocket launches, ISS passes, meteor showers, eclipses, and spacewalks. It focuses on events that are actually visible from your current location. ### How does Horizon Alert determine visibility? Horizon Alert uses real visibility intelligence, including cloud cover at launch time fetched per location, sun elevation to filter out daylight events, and distance from the launch pad. This ensures you receive accurate alerts. ### Can I customize when I receive alerts for events? Yes, you can choose your alert timings for events, with options ranging from 1 day, 12 hours, 2 hours, 30 minutes, 10 minutes, or T-zero. Notifications can also auto-cancel if conditions degrade. ### Does Horizon Alert require an account or track my data? No, Horizon Alert is built privacy-first. It does not require accounts or analytics, and no third-party tracking is involved. Your location stays on your device, with only rounded latitude and longitude sent for cloud forecasts. ### What devices is Horizon Alert available on? Horizon Alert is available on iPhone and iPad devices. It features a clean, dark-mode-native experience. ### How often is Horizon Alert updated? The latest version of Horizon Alert is 1.0.3, and it was last updated on July 22, 2026. Updates typically include improvements and new features based on user feedback and astronomical data. ### Is Horizon Alert suitable for children? Horizon Alert has an age rating of 4+, making it suitable for children. Its focus on educational and observational content about space makes it a great tool for young enthusiasts. ### Does Horizon Alert have ads? No, Horizon Alert does not contain advertisements. It offers a clean, uninterrupted experience for users interested in sky events. ## Version history (last 3 releases) ### 1.0.3 — 2026-07-22 Point your phone at the sky — introducing the new Sky view. • New Sky tab: hold your phone up to identify planets, the Moon (and its current phase), and bright stars in real time. • The main feed is now "Up Next" — clearer about what's coming. • You'll now see a heads-up when the feed can't refresh, so you always know when you're viewing saved events. • Haptics and reliability improvements throughout. ### 1.0.1 — 2026-07-16 Updated preview screenshots. ### 1.0 — 2026-07-15 No release notes. ## More apps by Matt Strelecki - [Coinkids: Kid Value Creation](https://appshunter.io/ios/app/coinkids-kid-value-creation/id6748862670) All apps by Matt Strelecki: https://appshunter.io/developer/1820759554 --- *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 2026-07-26.*