How to Tie a Tie is a free app that helps one do exactly what one would think: tie a necktie. With detailed images and illustrations, the software gives step-by-step instructions for how to properly tie and wear a traditional necktie. All sorts of knots are covered, such as Atlantic, diagonal, four-in-hand, half Windsor, kelvin, oriental, the single double and more.

The app supports English and Russian language and must be used on mobile devices with the Android operating system version 2.3 and up. The app is a product of Artfonica, a company that seems to specialize in tie knowledge. The software is ad supported, and an ad-free pro version is available for $3.99.