hamsfi
Solar flux info on your watch
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Free
About
This app reads the latest solar data, and shows the three most commonly-used values (10.7cm Solar Flux Index, planetary A index, and planetary K index) in a complication you can add to your watch face. Tapping on the complication opens the app, and shows the same data full-screen.
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What's New in hamsfi
1.1
June 14, 2026
Added two pages to the app display, that contain images from https://www.hamqsl.com showing more detailed solar data, and calculated band conditions.