ProTimersPlus

ProTimersPlus has 12 Countdown Timers, 8 Stopwatches (count-up timers), 2 Alarm Clocks, and 4 World Clocks, along with a Giga Digital Clock and Date view.

There are 29 color themes and 15 Sound FX to choose from.

When any Alarm Clock or Countdown Timer fires, it automatically brings the app to focus, so you will never miss an alarm, even when you are running is Silent Mode.

Use the MODE button to toggle between Full-Screen and Titlebarless Windowed Mode.

All World Clocks, all Digital Clocks, and the Alarm Clocks show the current time in either 12-hour or 24-hour format.