# HF Weather Fax

> Decode and display marine weather fax transmissions from HF radio audio. (iPhone/iPad app by Black Cat Systems.)

- Source: https://appshunter.io/ios/app/hf-weather-fax/id394199597 (this page in markdown: same URL + `.md`)
- Developer: [Black Cat Systems](https://appshunter.io/developer/301047032)
- Category: Weather, Utilities
- Price: $3.99
- Rating: 3.70/5 from 18 App Store ratings · 51 written reviews indexed
- Age rating: 4+
- Requires: iOS 6.0 · 2 MB
- Languages: American English
- Released: 2010-10-01
- Data updated: 2026-09-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/hf-weather-fax/id394199597/reviews.md

## What is HF Weather Fax?

Do you want to get your weather charts without using an internet connection or a dedicated computer? HF Weather Fax lets you receive marine weather radiofascimile transmissions, using the audio from your HF marine radio. Just set it next to the radio's speaker or headphones, tune in a weather fax frequency, and watch the images come in. The app can also receive audio from Bluetooth audio devices. 

HF Weather Fax is perfect for mariners who want to be able to view the latest weather reports and forecasts. 

Received fax images can be manually or automatically saved, and viewed later. You can also export them to your computer using iTunes. 

There is also a built in copy of the NOAA/NWS Radiofacsimile schedule, and an option to download the latest copy of the schedule from the NWS website.

Visit the support page for step by step instructions showing how to use the app: http://www.blackcatsystems.com/ipad/iPad_HF_FAX_Weather_Fax_App_FAQ.html

Buy your copy right now, and start decoding and displaying weather fax transmissions in minutes.

## Key features

- Receive weather fax transmissions
- Works with HF marine radio audio
- Save received fax images
- Export images via iTunes
- Built-in NOAA/NWS schedule
- Download latest schedule

## Chart rankings

- #75 in Top Paid · Weather (US App Store)

## Recent user reviews (10 of 51)

All indexed reviews: https://appshunter.io/ios/app/hf-weather-fax/id394199597/reviews.md

### 5/5 — 非常好的软件

*2025-05-31*

如果能免费就更好了（

### 1/5 — Complete rubbish

*2025-01-08, version 1.6*

Doesn’t work.

### 5/5 — Amazing

*2024-09-15, version 1.6*

Connected Tecsun PL-365 to a 7m copper core wire horizontally and a crocodile clip to the Ariel, tuned into 2610 kHz Northwood and within a few minutes had a surface pressure chart…. Amazing app.

### 1/5 — garbage app

*2023-10-26*

cannot get this to work.

### 5/5 — Does the job!

*2023-01-08, version 1.6*

No problem. A bit clunky but who cares?

### 5/5 — Excellent

*2022-01-10, version 1.6*

I really like this app it decodes really well. Well worth the money.

### 2/5 — High expectations....

*2020-12-14, version 1.6*

I had high expectations. The reality is that it is a great idea, but does not really work in real life. Aside from other noises, after everything is quite it still bring a very poor quality, non synchronized fax view that is useless.
I wish it would work as I wanted it as a backup for my HF SSB computer weather fax program. 
I gave it two stars with hope that sometime in the future it will be tunes and synced better

### 5/5 — Does what it says.

*2020-10-01, version 1.6*

This decodes HF FAX signals, hence the name. It will not do satellite images, nor does it claim to.

### 5/5 — Works great

*2020-07-31, version 1.6*

Just remember the schedules are in UTC time, during summer that isn’t the same as nearby London time. Had me scratching my head but not any fault of this great app.

### 1/5 — Horribleness

*2020-04-20, version 1.6*

This app does not load anything but white dots on a black background

## Frequently asked questions about HF Weather Fax

### What does HF Weather Fax do?

HF Weather Fax allows you to receive marine weather radiofacsimile transmissions directly from your HF marine radio's audio output. It decodes these transmissions and displays them as images on your device, providing weather charts and forecasts without needing an internet connection.

### How do I use HF Weather Fax?

Simply place your device's audio input next to your HF marine radio's speaker or connect it to the headphone output. Tune your radio to a weather fax frequency, and the app will begin decoding and displaying the incoming images. Detailed instructions are available on the developer's support page.

### Can I save the weather charts I receive?

Yes, the app allows you to manually or automatically save the received fax images. These saved images can be viewed later within the app or exported to your computer using iTunes for further analysis or record-keeping.

### Is HF Weather Fax compatible with all devices?

The description mentions compatibility with iPads and the ability to receive audio from Bluetooth devices, suggesting it is designed for mobile devices. Specific operating system requirements would typically be found in the app store listing.

### What is the NOAA/NWS Radiofacsimile schedule?

The NOAA/NWS Radiofacsimile schedule is a list of frequencies and times when weather fax transmissions are broadcast by the National Oceanic and Atmospheric Administration (NOAA) and the National Weather Service (NWS). The app includes a built-in copy of this schedule and allows you to download the latest version.

## Version history (last 5 releases)

### 1.6 — 2017-05-08

This update from Apple will improve the functionality of this app. No new features are included.

Added option to save images to the photo library.
Updates for iOS 10.3.

### 1.5.0 — 2015-06-23

Support for Bluetooth audio devices

### 1.4.0 — 2015-02-28

Updates for iOS 8.1.3.
Fixed several bugs that could cause a crash.

### 1.3.1 — 2013-02-02

Fixed a bug with the slant adjustment buttons not visible on the iPhone and iPod.

### 1.3 — 2013-01-10

Added tuning view to help properly tune in fax signals

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## More apps by Black Cat Systems

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- [Drill Calc](https://appshunter.io/ios/app/drill-calc/id304434324)
- [Photon Calc](https://appshunter.io/ios/app/photon-calc/id304436071)

All apps by Black Cat Systems: https://appshunter.io/developer/301047032

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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 2026-09-10.*