TimerVision app for iPhone and iPad

This simple countdown timer turns your TV into a helpful timer display for home or classroom use. The time counts down in hours, minutes and seconds; when it expires, a ring sounds, the display flashes, and the elapsed expired time is shown. Tap or hold down the (+) and (-) buttons to set the time on the main screen, or press the settings button to choose from a list of presets. The timer will display in either a light or dark theme; sound options and tenths of seconds display can be adjusted in the app settings. The timer continues to run in the background when switching to other apps (the timer will not ring when it is in the background, however).