The Solar Sphere provides current value of Kp-index derived from the NOAA Space Weather Prediction Center using data from multiple ground-based magnetometers.

Also, current solar images are available in 4 different high resolution formats.

The Kp-index quantifies solar disturbances in the horizontal component of earth's magnetic field with an integer in the range 0-9 with 1 being calm and 5 or more indicating a geomagnetic storm.

For drone flyers, please only fly on solar KP Index less than 5.

What’s New

Version 1.2

This app has been updated by Apple to use the latest Apple signing certificate.

Updated for iOS 10 and watchOS 3. Apple Watch users should upgrade to watchOS.

Ratings and Reviews

4.0 out of 5
6 Ratings

6 Ratings

WantStuff2Work ,

It works!

Wow, it's amazing what people will whine about.

This is a great time rendered view of the sun under different light spectrums as well as a sun shadowed view of its space emissions. It shows the aurora over the North Pole. What else is there really?

Great reference for low banders working DX

wolfejd ,

Very nice

The app works nicely. I would like if you could pause and play the videos as well as scrub through them.

Deadhorsenomad ,

Outstanding Application

The ONLY aurora application to show the forecast in motion, no other app does that, none. Use it daily to see the possibility of the Northern Lights in Alaska, kudos

App Privacy

The developer, Fleur Hong Kong, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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