Drill-Maker is a free iPhone application developed by Spinshot Trading Company Ltd. It falls under the category of Utilities & Tools, specifically designed for tennis enthusiasts. With Drill-Maker, users can conveniently control various brands of tennis ball machines released by Spinball-Sports Industries Inc.

This application serves as a remote controller, providing users with the ability to duplicate all the control functions of the tennis ball machine's control panel. Whether it's adjusting the oscillation feature or customizing every shot, Drill-Maker allows users to create and execute a wide range of drills.

By leveraging the power of the iPhone, Drill-Maker offers a user-friendly interface that simplifies the process of controlling the tennis ball machine. Whether you're a professional player looking to fine-tune your skills or a beginner seeking to improve your game, Drill-Maker provides a versatile solution to enhance your tennis training sessions.