This is a 4-mode app suitable for time management calculations: time calculation function, stopwatch function, backward count timer function, and clock display function.
Calculations and measurements in seconds are possible (measurements in milliseconds are not supported)
You can use the time calculation function, stopwatch function, and backward count timer function on Apple Watch alone.

detail of function
・Time calculation function [CALCULATOR]: Hour: minute: second addition and subtraction function
・Stopwatch function [STOP WATCH]: Stopwatch function in seconds
You can not only start from 0 seconds but also set the start time in advance.
・Countdown timer function [COUNTDOWN]: Countdown timer function from a preset time
When it reaches 0 seconds, no alarm is generated and it continues to move in the negative direction.
(The press time will be displayed during broadcasts, etc.)
・Clock display function [TIME]: Displays the iPhone clock time digitally.