APKPure Appを使用する
OI Countdownの旧いバージョンをダウンロードすることが可能
The OpenIntents Countdown notifies you after a specified amount of time.
The OpenIntents Countdown notifies you after a specified amount of time.
Features:
* Set a countdown by specifying duration or date.
* Be notified by vibration or selectable sound.
* Start an unlimited number of named timers simultaneously.