HF Weather Fax
by Black Cat Systems
- Weather
- Paid
- Zombie
- Rating
- 3.7
- 18 ratings · US storefront
- Top 84%among 140 Weather apps
- Last update
- May 8, 2017
- Version 1.6
- Size
- 2 MB
- Category
- Weather
- Tracked since
- Oct 9, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
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.
What’s new
Release notes for the latest version, as written by the developer.
Added option to save images to the photo library.
Updates for iOS 10.3.
Rank history
Daily position in the Australia charts. #1 is at the top.
- Best rank
- #57
- Current rank
- #63
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
75/100
Not flagged as small & simple
- Developer size0% · 25
Developer: 18 apps on the charts
- Audience size100% · 20
Ratings: 18
- App size100% · 10
Size: 2 MB
- Price model100% · 15
Price model: paid
- Demand proof100% · 30
Best rank #5, 58 countries
An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2
How the score worksVersion history
- 1.6LatestReleased May 8, 2017