Windy Lookout is a free iPhone application developed by Sean Thornton that serves as an early alert system for lake recreational users. Its main function is to detect, alert, and ensure the safety of users.

While there are many free services available that provide current weather conditions and forecasts, the problem lies in the unpredictability of sudden weather changes on the lake. This is particularly crucial for the sailing community, as high wind speeds can create rough conditions and pose a significant risk to sailboats.

Windy Lookout tackles this issue by analyzing and processing real-time wind conditions beyond the perimeter of the lake. By doing so, it provides users with an early alert should a dangerous wind arise. This allows users to make informed decisions and take necessary precautions to stay safe in the minutes before the wind hits.