# RadioFax: Weather Fax Decoder — Marine HF & Satellite Charts

> Marine HF & Satellite Charts (iPhone/iPad app by 晨阳 段.)

- Source: https://appshunter.io/ios/app/radiofax-weather-fax-decoder/id6788627562 (this page in markdown: same URL + `.md`)
- Developer: [晨阳 段](https://appshunter.io/developer/1791560858)
- Category: Weather, Utilities
- Price: $2.99
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: Chinese (Simplified, China), German (Germany), Italian, Japanese, French (France), Chinese (Traditional, Taiwan), American English, European Spanish, Korean
- Released: 2026-07-09
- Data updated: 2026-10-25

## What is RadioFax?

RadioFax turns HF weather fax and satellite weather audio into readable charts on your iPhone, iPad, and Mac.

Use microphone input from a radio speaker, line audio routed into your device, or an audio file you already recorded. RadioFax automatically detects supported WEFAX parameters such as LPM, IOC, and phase, then renders the chart line by line.

Key features:
• Decode HF marine weather fax and NOAA APT-style satellite weather images
• Automatic mode, line-rate, IOC, and phase detection
• Live decoding from microphone audio
• Decode saved WAV/audio files
• Local chart history with station and mode details
• Built-in station directory for common weather fax sources
• Works offline after installation

RadioFax is made for sailors, radio hobbyists, weather watchers, and anyone who wants weather charts from radio signals without depending on a network connection.

## Is RadioFax safe?

Not enough ratings yet to assess RadioFax.

## Is RadioFax legit?

RadioFax: Weather Fax Decoder appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for RadioFax is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 2026.10.15 — 2026-10-16

Bug fixes and stability improvements.

### 2026.10.14 — 2026-10-15

Ready for iPhone Duo: the layout now adapts when the display is unfolded and when the app is used side by side with another app. Plus stability improvements.

### 2026.7.12 — 2026-07-12

Performance optimizations and stability improvements.

### 1.0 — 2026-07-09

No release notes.

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All apps by 晨阳 段: https://appshunter.io/developer/1791560858

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*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 2026-10-25.*