Cyclono is a free iPhone app developed by Ilya Ostashkov that provides incredibly accurate wind forecasts from around the world. Using AI technology, the app analyzes big data from various sources to deliver the most believable wind forecast.

One of the standout features of Cyclono is the ability to measure wind speed using your smartphone's microphone. Simply point the microphone towards the wind, and the app will provide you with real-time wind speed readings. This feature is particularly useful when you're already on the spot and need instant wind information.

The app also allows users to request the addition of their favorite wind spots with sensors. This community-driven approach ensures that Cyclono stays up-to-date with the latest wind data.

Cyclono is especially valuable for kitesurfers, windsurfers, surfers, yachtsmen, and sailors around the world. The app's accuracy and ease of use make it an essential tool for outdoor enthusiasts.

Please note that Cyclono offers two subscription options: $1.99 per month or $13.99 per year. These prices may vary depending on your country of residence, and the subscription will automatically renew unless turned off in your iTunes Account Settings.