Timegrapher is a utility app designed for iPhone users to measure the accuracy of their mechanical watches. Utilizing the device's microphone, it detects the ticking sounds of the watch to provide detailed measurements. Key features include detecting beats per hour (BPH), measuring beat rate, beat error, and amplitude. Users can also set the lift angle for precise readings, enhancing the app's functionality for watch enthusiasts.

In addition to the measurement capabilities, Timegrapher displays real-time beat noises including unlock, impulse, and lock sounds, giving users a comprehensive understanding of their watch's performance. The app also tracks accuracy and beat error over time, making it a valuable tool for anyone looking to maintain their mechanical watch's precision. With more features promised in future updates, Timegrapher is a promising addition to the utilities and tools category.