Uz (whirlpool) is a very simple countdown timer for iPhone and iPod that visualizes the remaining time. One spiral cycle corresponds to each hour, and the timer can be set for up to 10 hours. Touch and drag the clock face to set the time. Uz plays both an alarm sound and vibrates when the timer expires. In order to interrupt a running timer, tap the clock face seven times continuously. This feature reduces the possibility of the user accidentally stopping the timer.