--- title: "HAMSignal — App Overview" url: https://marlvel.ai/apps/com-stephenthorn-hamsignal category: Utilities developer: Stephen Thorn platforms: ios rating: N/A (0 ratings) pricing: paid report_level: overview generated: 2026-04-24 last_verified: "2026-04-24T01:07:19.733Z" --- > **Key Insight:** The app differentiates itself by shifting the focus from solar storm alerts to actionable, user-defined notifications for optimal band openings. | Metric | Value | |--------|-------| | Category | Utilities | | Rating | N/A ★ (0) | | Pricing | paid | | Platforms | iOS | | Latest Version (iOS) | 3.0 | | Developer | Stephen Thorn | ## What is HAMSignal? HAMSignal is a utility app designed for HAM radio operators to monitor real-time solar weather and HF band conditions. Unlike standard weather apps that focus on storm warnings, it provides proactive push notifications when specific bands open based on the user's grid square. ## Key Features - **Band Opening Alerts**: Sends push notifications when conditions improve for specific HF bands based on the user's QTH. - **Real-Time Solar Data**: Provides NOAA-sourced K-index, SFI, and A-index updates every 15 minutes with status ratings for all 8 HF bands. - **27-Day Solar Forecast**: Displays NOAA's long-term outlook for SFI and K-index ranges to assist with future planning. - **Grey Zone / Terminator Overlay**: Visualizes the day-night boundary and local sunrise/sunset times to aid in HF propagation timing. ## Who is it for? Amateur radio operators seeking to optimize their HF communication timing. ## Links - [App Store](https://apps.apple.com/us/app/hamsignal/id6760658659?uo=2) - [Full Intelligence Report](https://marlvel.ai/apps/com-stephenthorn-hamsignal) --- *This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/com-stephenthorn-hamsignal).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*