Acute Softwares Timer has three main timing modes: Manual Mode (Acts as a standard stopwatch); Timer Mode (count for a fixed amount of time...like an egg timer) and Alarm Clock Mode (timer will count until a preset time of day). You can set alarms in either Timer or Alarm Clock mode, and each running timer can play a WAV file or pop-up a message. Up to 32 separate timers can run at once. In Timer mode you can set it to automatically restart, so that for example you can have a timer to remind you to do something every hour.