Chime Clock is an iPhone app developed by Tan Chia Ling that allows you to keep track of time with chime functionality. The app is designed to chime by hour, minutes, or seconds, and you can choose from a variety of chime sounds to tell you the time.

The clock display feature allows you to show or hide the date and seconds, and you can also dim the screen for battery saving. In the app chime function, you can turn on or off for each second, minute, or hour mode, and the chime sound is adjustable to seconds, minute, or on the hour. You can choose from 5 different sounds and also set the hour chime style to single mode or time mode.

The app also has defined periods of time and ranges of time to chime, allowing you to customize the chime function to your specific needs. Additionally, there is a chime function for background/offline mode that allows you to adjust the chime sound to the hour and choose from 5 different bell sounds, including Big Ben and Grandfather Clock.

Overall, Chime Clock is a useful and customizable app for anyone who needs to keep track of time without looking at the clock.