体育の時計 app for iPhone and iPad

Alarm clock
You can set up multiple alarm clocks, each with a switch that opens and closes.
You can receive notifications, even if your iPhone is locked.
You can reuse it many times.
You can set up a reminder tag and date, and you can choose your favorite ringtone.

Timer
You can set up your own time.
You can receive notifications, even if your iPhone is locked.

Stopwatch
You can track your single lap performance.

Offline Use
You can still use it in the absence of a network.

A simple and convenient sports clock can help you manage your time better.