WilCo is an iPhone application tailored for aviation enthusiasts and professionals, developed by Muammer SAHINGIRAY. The app, designed by pilots, offers a plethora of aviation-specific information, including METAR, TAF, D-ATIS, NOTAM, time zone data, Sun and Moon rise and set times, airport procedures, runway information, frequencies, and a personal notes section. The latest update introduces a 3D map feature for airports, allowing users to preview approaches and explore surrounding areas. Additionally, the app provides weather charts, a briefing page, aviation calculations converter, Weight and Balance tools, and a Flight Computer for various in-flight calculations.

WilCo offers a range of features for free, but a subscription unlocks additional functionalities such as decoded METAR/TAF and NOTAM data, Airport 3D View, Aviation Map, Weather Charts, Weight & Balance tools, ICAO Flight Plan Form, and more. Users can enjoy a 7-day free trial before opting for subscription services, which are available for different time periods. It is important to note that the app should not be used for critical flight planning purposes and is intended for educational use only.