Twelve O'clock is an iPhone app developed by Hieu Pham. This free app falls under the category of Utilities & Tools and aims to help users track the accuracy of their watches in a realistic way.

Unlike timegrapher devices that measure instantaneous accuracy, Twelve O'clock focuses on tracking accuracy over time. It brings back the nostalgia of manually synchronizing watches to the clock on the TV at 7pm every day.

With Twelve O'clock, users can easily manage their watch collection by adding, editing, and removing items from a list. The app also allows users to include a nice wristshot of each watch, adding a personal touch to the collection.

One of the key features of Twelve O'clock is its ability to calculate watch accuracy in seconds per day. Users can add checkpoints and let the app analyze the accuracy over time, providing them with a clear chart of their watch's performance.

In addition to its tracking capabilities, Twelve O'clock also offers curated content for watch lovers. Users can explore and learn more about horology, enhancing their knowledge and passion for watches.

Overall, Twelve O'clock is a useful and enjoyable app for watch enthusiasts who want to keep track of their watch accuracy in a realistic and nostalgic manner.