【實用工具app】Countdown timer|最夯免費app-綠色工廠好玩App

Countdown timer is a simple timer app with a unique feature of beeping for the predefined amount of seconds, which lets the user know that alarm is about to sound.

It's a perfect app for those who are not satisfied with just the time-ending alarm, but want to know beforehand that time is running out. You can set the beep's from 0 - 30 seconds before the alarm.