Tie Helper is an educational app developed by linux777 for Android 9.0 users. This free app provides step-by-step instructions for tying 33 different types of knots, including the Eldredge Knot, the Manhattan Knot, and the Windsor Knot. With this app, you can easily learn how to tie a tie for any occasion, whether it's for a job interview or a formal event. The app is easy to use and provides clear illustrations and videos for each knot. Tie Helper is a great tool for anyone who wants to improve their tie-tying skills or learn new knots. Thanks to Brad Hornbeck for his contribution to the app.