WSPR Watch

WSPR Watch is an iOS app available for iPhone and iPad via the Apple App Store. The primary purpose is to pull data from WSPRnet.org and display it in various useful ways. There's the list view:

A map view:

Graphs:

And some analysis can be done in the app:

Frequently asked questions

PSK Reporter doesn't work?

PSK Reporter requires a callsign to search for. (I agree the app should tell you this rather than displaying nothing).

How do I connect the phone to my radio to transmit?

The transmit feature is really just meant for a quick acoustic check of an antenna. If you want to transmit WSPR I recommend using WSJT-X on a cheap laptop running Linux.

What do the colours of the dots on the map mean?

• Green is a spot receiver's location
• Red is a spot transmitter's location
• Purple is a location that is both transmitting and receiving

I don't like the colours used for each band, can I change them?

Yes! In settings look for "Band Colours" and tap Edit. This is a recent addition.

How do I edit the list of recently used callsigns?

This is not obvious. In the callsign screen, delete the callsign in the field. Now you'll see a little book icon on the right. (Circled).

Tap the book icon and you'll get a callsigns edit screen. You can delete and change the order of recently used callsigns.

Known issues

Doesn't filter LF spots

When using the WSPRnet back end the app doesn't properly filter LF spots. The reason is that at the moment I'm using the OldDB page on WSPRnet for data and it doesn't understand LF. I do plan to update this in the future.

Freeze on the map

I think since iOS 16.1 an issue has emerged where from time to time the app will freeze while re-drawing the map. I have found other developers reporting the same issue and have tried to work around it to some extent without total success.

If you can come up with a reliable set of steps to trigger the freeze please let me know.