TimeChime: Hourly Chime

TimeChime is the most complete chiming app on the App Store. It can be set to play a sound on the quarter-hour, half-hour, or hour. You choose the interval that you want! No other app gives you this flexibility!
Features:
+ Set a chime to play on each hour, each half-hour, or each quarter-hour. For example,
starting the 15 minute time will cause chimes at quarter past, half past, quarter to,
and on the hour. Starting the 30 minute timer will cause chimes at half past and
on the hour.
+ Have a different sound for each interval.
+ Visible alert in addition to the chime.
+ Alerts on either your iPhone or Watch.
+ Stop, start timers on your iPhone or Watch.
Upgrades:
+ see a detailed list of upcoming alerts by time and date (Alert Editor).
+ pre-set the days of the week and hours of each day during which you want to receive alerts and chimes (Day and Time Selection).
+ additional sounds for alerts (Sound Pack).
IMPORTANT: Press Menu>Help for a Quick Start Guide. 
Please see our web site (nrcsoftware.com\support) for a user manual and important information on how to set up alerts. Please do not submit a negative review until you have studied this document!